# List of Great Britain by-elections (1754–1774)

This is a list of parliamentary by-elections in Great Britain held between 1754 and 1774, with the names of the previous incumbent and the victor in the by-election.
In the absence of a comprehensive and reliable source for party and factional alignments in this period, no attempt is made to define them in this article. The House of Commons: 1754–1790 provides some guidance on the complex and shifting political relationships, but it is significant that the compilers of that work make no attempt to produce a definitive list of each member's allegiances.

## Resignations

    See Resignation from the British House of Commons for more details.
Where the cause of the by-election is given as "resignation", this indicates that the incumbent was appointed at his own request to an "office of profit under the Crown". Offices used in this period were the Stewards of the Chiltern Hundreds, the Manor of Old Shoreham, the Manor of East Hendred, the Manor of Kennington in Surrey (used once in 1757) and the Manor of Shippon in Berkshire (used once in 1765). These appointments are used as a constitutional device for leaving the House of Commons, whose Members are not permitted to resign. If the vacancy was caused by appointment to another office then this office is noted in brackets.
In addition certain offices of profit, such as cabinet positions, required the MP to seek re-election. These offices are noted separately.

## By-elections

The c/u column denotes whether the by-election was a contested poll or an unopposed return. If the winner was re-elected, at the next general election and any intermediate by-elections, this is indicated by an * following the c or u. In a few cases the winner was elected at the next general election but had not been re-elected in a by-election after the one noted. In those cases no * symbol is used.

### 11th Parliament (1754–1761)

| Date | Constituency | c/u | Former Incumbent | Winner | Cause |
| 9 December 1754 | Bury St Edmunds | u | Felton Hervey | Felton Hervey | Election voided due to Double Return |
| 9 December 1754 | Bury St Edmunds | u | Augustus John Hervey | Felton Hervey | Election voided due to Double Return |
| 9 December 1754 | Dartmouth | u* | John Jeffreys | John Jeffreys | Warden of the Mint |
| 9 December 1754 | Lostwithiel | u | Thomas Clarke | Thomas Clarke | Master of the Rolls |
| 9 December 1754 | Northampton | u | George Compton | Charles Compton | Succeeded to a peerage |
| 9 December 1754 | Petersfield | u | William Beckford | Sir John Philipps | Chose to sit for City of London |
| 10 December 1754 | Ludlow | u* | Richard Herbert | Edward Herbert | Death |
| 10 December 1754 | St Mawes | u | Robert Nugent | James Newsham | Chose to sit for Bristol |
| 10 December 1754 | Tavistock | u | Jeffrey French | Richard Vernon | Death |
| 12 December 1754 | Thetford | u | Charles FitzRoy Scudamore | Herbert Westfaling | Chose to sit for Hereford |
| 13 December 1754 | Totnes | u | Sir John Strange | Sir Richard Lloyd | Death |
| 16 December 1754 | Caernarvon Boroughs | u | William Wynn | Robert Wynne | Death |
| 18 December 1754 | Rutland | u | Lord Burghley | Lord Burghley | Succeeded to a peerage |
| 20 December 1754 | Boroughbridge | u | Lewis Watson | John Fuller | Chose to sit for Kent |
| 20 December 1754 | Edinburghshire | u | Robert Dundas | Robert Dundas | Lord Advocate |
| 24 December 1754 | Taunton | c* | John Halliday | Robert Maxwell | Death |
| 25 December 1754 | Hampshire | u | Lord Harry Powlett | Marquess of Winchester | Succeeded to a peerage |
| 26 December 1754 | Northamptonshire | u* | Valentine Knightley | William Cartwright | Death |
| 30 December 1754 | Wareham | u | Henry Drax | Henry Drax | Election voided due to Double Return |
| 30 December 1754 | Wareham | u | Thomas Erle Drax | Henry Drax | Election voided due to Double Return |
| 30 December 1754 | Wareham | u | William Augustus Pitt | William Augustus Pitt | Election voided due to Double Return |
| 30 December 1754 | Wareham | u | John Pitt | William Augustus Pitt | Election voided due to Double Return |
| 1 January 1755 | Elgin Burghs | u* | William Grant | Andrew Mitchell | Resignation (Lord of Justiciary) |
| 13 January 1755 | Cambridge | u* | Thomas Bromley | Charles Sloane Cadogan | Succeeded to a peerage |
| 15 January 1755 | Chichester | u | Viscount Bury | Augustus Keppel | Succeeded to a peerage |
| 17 January 1755 | Lymington | u | Marquess of Winchester | Lord Harry Powlett | Resignation to contest Hampshire |
| 27 January 1755 | Bishop's Castle | u | Barnaby Backwell | Walter Waring | Death |
| 5 February 1755 | Bewdley | u | William Henry Lyttelton | William Finch | Resignation (Governor of South Carolina) |
| 6 February 1755 | Cumberland | u | Sir James Lowther | Sir William Lowther | Death |
| 11 March 1755 | Radnorshire | u | Sir Humphrey Howorth | Howell Gwynne | Death |
| 15 March 1755 | Boroughbridge | u* | John Fuller | Sir Cecil Bishopp | Death |
| 18 March 1755 | Old Sarum | u | Thomas Pitt | Sir William Calvert | Resignation |
| 19 April 1755 | Dover | u | William Cayley | Peter Burrell | Resignation (Commissioner of Excise) |
| 1 May 1755 | Hertfordshire | u | Paggen Hale | William Plumer | Death |
| 5 May 1755 | Herefordshire | u* | Lord Harley | Sir John Morgan | Succeeded to a peerage |
| 15 June 1755 | Lichfield | c | Viscount Trentham | Henry Vernon | Succeeded to a peerage |
| 19 November 1755 | Reading | u* | William Strode | John Dodd | Death |
| 19 November 1755 | New Windsor | u* | Henry Fox | Henry Fox | Southern Secretary |
| 20 November 1755 | Brackley | u | Thomas Humberston | Sir William Moreton | Death |
| 21 November 1755 | Christchurch | u | Sir Thomas Robinson | Sir Thomas Robinson | Master of the Great Wardrobe |
| 21 November 1755 | Ludgershall | u | Sir John Bland | Henry Digby | Death |
| 21 November 1755 | Seaford | u* | William Hay | James Peachey | Death |
| 22 November 1755 | Hedon | u* | Charles Saunders | Charles Saunders | Comptroller of the Navy |
| 22 November 1755 | Tiverton | u | Sir William Yonge | Thomas Ryder | Death |
| 24 November 1755 | East Retford | u* | John Shelley | John Shelley | Keeper of the Records in the Tower of London |
| 24 November 1755 | Wareham | u | Henry Drax | Edward Drax | Death |
| 25 November 1755 | Plymouth | u* | The Viscount Barrington | The Viscount Barrington | Secretary at War |
| 29 November 1755 | Morpeth | u | Robert Ord | Sir Matthew Fetherstonhaugh | Resignation (Chief Baron of the Scottish Exchequer) |
| 29 November 1755 | Okehampton | u | Sir George Lyttelton | Sir George Lyttelton | Chancellor of the Exchequer |
| 3 December 1755 | Cardiganshire | u | John Lloyd | Wilmot Vaughan | Death |
| 9 December 1755 | Northampton | u | Charles Compton | Richard Backwell | Death |
| 10 December 1755 | Chester | u* | Sir Robert Grosvenor | Thomas Grosvenor | Death |
| 19 December 1755 | Dumfriesshire | u | Lord Charles Douglas | Sir James Veitch | Became the eldest son of a Scottish Peer |
| 19 December 1755 | Liverpool | u* | John Hardman | Ellis Cunliffe | Death |
| 22 December 1755 | Cambridge | u* | Viscount Dupplin | Viscount Dupplin | Paymaster of the Forces |
| 27 December 1755 | Cockermouth | u* | Percy Wyndham O'Brien | Percy Wyndham O'Brien | Junior Lord of the Treasury |
| 27 December 1755 | New Woodstock | u* | The Viscount Bateman | The Viscount Bateman | Lord of the Admiralty |
| 29 December 1755 | Gloucester | u* | George Augustus Selwyn | George Augustus Selwyn | Paymaster of the Works |
| 29 December 1755 | Higham Ferrers | u* | John Yorke | John Yorke | Patentee for Commissions of Bankruptcy |
| 29 December 1755 | Ilchester | u | John Talbot | John Talbot | Lord of Trade |
| 29 December 1755 | Norwich | u | Lord Hobart | Lord Hobart | Comptroller of the Household |
| 29 December 1755 | Warwick | u | The Earl of Hillsborough | The Earl of Hillsborough | Treasurer of the Chamber |
| 30 December 1755 | Penryn | u* | Richard Edgcumbe | Richard Edgcumbe | Lord of the Admiralty |
| 30 December 1755 | New Romney | u | Henry Furnese | Henry Furnese | Junior Lord of the Treasury |
| 30 December 1755 | Seaford | u* | The Viscount Gage | The Viscount Gage | Paymaster of Pensions |
| 30 December 1755 | Tavistock | u* | Richard Rigby | Richard Rigby | Lord of Trade |
| 31 December 1755 | Weymouth and Melcombe Regis | u | George Bubb Dodington | George Bubb Dodington | Treasurer of the Navy |
| 31 December 1755 | Weymouth and Melcombe Regis | u | Welbore Ellis | Welbore Ellis | Vice-Treasurer of Ireland |
| 1 January 1756 | Dunwich | u | Soame Jenyns | Soame Jenyns | Lord of Trade |
| 19 January 1756 | Hindon | u | Bisse Richards | William Mabbott | Death |
| 19 February 1756 | Berwickshire | u | Alexander Hume Campbell | Alexander Hume Campbell | Lord Clerk Register |
| 4 March 1756 | Appleby | u* | Philip Honywood | Philip Honywood | Void Election |
| 4 March 1756 | Appleby | u | William Lee | Fletcher Norton | Void Election |
| 18 March 1756 | Bristol | c* | Richard Beckford | Jarrit Smith | Death |
| 19 March 1756 | Liverpool | u | Thomas Salusbury | Charles Pole | Death |
| 17 April 1756 | Orford | u* | John Offley | John Offley | Surveyor of the King's Private Roads |
| 23 April 1756 | Evesham | c | John Porter | Edward Rudge | Death |
| 28 April 1756 | Cheshire | u* | Charles Cholmondeley | Thomas Cholmondeley | Death |
| 29 April 1756 | Petersfield | u | William Gerard Hamilton | William Gerard Hamilton | Lord of Trade |
| 6 May 1756 | Dover | u | Peter Burrell | Hugh Valence Jones | Death |
| 19 May 1756 | Cumberland | u | Sir William Lowther | Sir William Fleming | Death |
| 1 June 1756 | Newark-on-Trent | u* | John Manners | John Manners | Housekeeper at Whitehall |
| 25 June 1756 | Norwich | u* | Horatio Walpole | Edward Bacon | Elevated to the peerage |
| 26 June 1756 | Newport (Cornwall) | u* | Edward Bacon | Richard Bull | Resignation to contest Norwich |
| 28 June 1756 | Tamworth | u* | Thomas Villiers | Viscount Villiers | Elevated to the peerage |
| 7 December 1756 | Buckingham | u* | George Grenville | George Grenville | Treasurer of the Navy |
| 7 December 1756 | Buckingham | u | James Grenville | William Pitt | Junior Lord of the Treasury |
| 7 December 1756 | Sandwich | u* | Claudius Amyand | The Viscount Conyngham | Resignation (Commissioner of Customs) |
| 8 December 1756 | Bath | u | Sir Robert Henley | Sir Robert Henley | Attorney General for England and Wales |
| 8 December 1756 | Ilchester | u* | John Talbot | Joseph Tolson Lockyer | Death |
| 8 December 1756 | Norwich | u* | Lord Hobart | Harbord Harbord | Succeeded to a peerage |
| 8 December 1756 | New Romney | u | Henry Furnese | Rose Fuller | Death |
| 8 December 1756 | Reigate | u* | Charles Yorke | Charles Yorke | Solicitor General for England and Wales |
| 8 December 1756 | Stockbridge | u | George Hay | The Viscount Powerscourt | Appointed Lord of the Admiralty |
| 8 December 1756 | Winchelsea | u* | Thomas Orby Hunter | Thomas Orby Hunter | Lord of the Admiralty |
| 8 December 1756 | New Woodstock | u* | The Viscount Bateman | The Viscount Bateman | Treasurer of the Household |
| 9 December 1756 | Penryn | u | Richard Edgcumbe | Richard Edgcumbe | Comptroller of the Household |
| 9 December 1756 | Warwick | u | The Earl of Hillsborough | John Spencer | Became a British Peer |
| 10 December 1756 | Aylesbury | c | Thomas Potter | Thomas Potter | Paymaster of the Forces |
| 10 December 1756 | Boroughbridge | u | William Murray | Earl of Euston | Appointed Lord Chief Justice and elevated to the peerage |
| 10 December 1756 | Poole | u | Sir Richard Lyttelton | Sir Richard Lyttelton | Master of the Jewel Office |
| 11 December 1756 | Aldborough | u* | William Pitt | Nathaniel Cholmley | Southern Secretary |
| 11 December 1756 | Callington | u* | John Sharpe | Fane William Sharpe | Death |
| 11 December 1756 | Dorchester | u* | John Pitt | John Pitt | Lord of the Admiralty |
| 11 December 1756 | Okehampton | u | Sir George Lyttelton | William Pitt | Elevated to the peerage |
| 11 December 1756 | Orford | u* | Henry Bilson Legge | Henry Bilson Legge | Chancellor of the Exchequer |
| 11 December 1756 | Tiverton | u* | Thomas Ryder | Nathaniel Ryder | Resignation |
| 13 December 1756 | Great Bedwyn | u | William Sloper | Robert Brudenell | Resignation (Lord of Trade) |
| 13 December 1756 | Downton | u | James Cope | Edward Poore | Death |
| 13 December 1756 | Harwich | u | John Phillipson | Viscount Duncannon | Death |
| 13 December 1756 | Great Yarmouth | u* | Charles Townshend | Charles Townshend of Honingham | Treasurer of the Chamber |
| 14 December 1756 | Saltash | u | Viscount Duncannon | Charles Townshend | Junior Lord of the Treasury |
| 21 December 1756 | Bury St Edmunds | u | Viscount Petersham | Earl of Euston | Succeeded to a peerage |
| 23 December 1756 | Glamorganshire | c | Charles Edwin | Thomas William Mathews | Death |
| 23 December 1756 | Selkirkshire | u* | Gilbert Elliot | Gilbert Elliot | Lord of the Admiralty |
| 24 December 1756 | Sutherland | u | George Mackay | George Mackay | Master of the Mint in Scotland |
| 4 January 1757 | Staffordshire | u | William Leveson Gower | Henry Thynne | Death |
| 14 January 1757 | Buckingham | u* | William Pitt | James Grenville | Chose to sit for Okehampton |
| 15 January 1757 | Boroughbridge | u | Earl of Euston | Thomas Thoroton | Chose to sit for Bury St Edmunds |
| 24 February 1757 | King's Lynn | u* | Horatio Walpole | Horace Walpole | Succeeded to a peerage |
| 25 February 1757 | Castle Rising | u* | Horace Walpole | Charles Boone | Resignation to contest King's Lynn |
| 8 March 1757 | Whitchurch | u* | William Powlett | George Jennings | Death |
| 28 March 1757 | Rochester | u* | John Byng | Isaac Townsend | Death (Executed) |
| 13 April 1757 | Berkshire | u* | Peniston Powney | Arthur Vansittart | Death |
| 13 April 1757 | Weobley | u | Savage Mostyn | Savage Mostyn | Naval Lord |
| 15 April 1757 | Bossiney | u | Edwin Sandys | Edwin Sandys | Lord of the Admiralty |
| 18 April 1757 | St Mawes | u* | Henry Seymour Conway | Henry Seymour Conway | Groom of the Bedchamber |
| 25 April 1757 | Portsmouth | u | Sir William Rowley | Sir William Rowley | Naval Lord |
| 27 April 1757 | Cumberland | u* | Sir William Fleming | Sir James Lowther | Death |
| 27 April 1757 | Wilton | u* | William Herbert | Nicholas Herbert | Death |
| 30 April 1757 | Huntingdonshire | u* | The Lord Carysfort | The Lord Carysfort | Lord of the Admiralty |
| 16 May 1757 | West Looe | u* | William Noel | William Trelawny | Resignation (Puisne Justice of the Common Pleas) |
| 19 May 1757 | Launceston | u* | Humphry Morice | Humphry Morice | Second Clerk Comptroller of the Green Cloth |
| 23 May 1757 | Dartmouth | u* | Walter Carey | Richard Howe | Death |
| 26 May 1757 | Bury St Edmunds | u* | Earl of Euston | Augustus John Hervey | Succeeded to a peerage |
| 13 June 1757 | Lyme Regis | u* | Francis Fane | Henry Fane | Death |
| 14 June 1757 | Cambridge University | u* | Edward Finch | Edward Finch | Master of the Robes |
| 4 July 1757 | Kingston upon Hull | u* | Richard Crowle | Sir George Montgomery Metham | Death |
| 5 July 1757 | New Windsor | c | Henry Fox | Henry Fox | Paymaster of the Forces |
| 6 July 1757 | Aylesbury | u* | Thomas Potter | John Wilkes | Vice-Treasurer of Ireland |
| 6 July 1757 | Winchelsea | u | Thomas Orby Hunter | Thomas Orby Hunter | Lord of the Admiralty |
| 7 July 1757 | New Woodstock | u* | The Viscount Bateman | The Viscount Bateman | Master of the Buckhounds |
| 9 July 1757 | Bath | u* | Sir Robert Henley | William Pitt | Resignation (Lord Keeper) |
| 9 July 1757 | Orford | u* | Henry Bilson Legge | Henry Bilson Legge | Chancellor of the Exchequer |
| 9 July 1757 | Orford | u* | John Offley | John Offley | Groom of the Bedchamber |
| 12 July 1757 | Calne | u | Thomas Duckett | George Hay | Resignation (Steward of the Manor of Kennington in Surrey) |
| 12 July 1757 | Cockermouth | u | The Earl of Thomond | The Earl of Thomond | Treasurer of the Household |
| 13 July 1757 | Downton | u* | James Hayes | Charles Pratt | Resignation |
| 13 July 1757 | Okehampton | u | William Pitt | Thomas Potter | Resignation to contest Bath |
| 30 July 1757 | Anstruther Burghs | u* | Sir Henry Erskine | Sir Henry Erskine | Surveyor of the King's Private Roads |
| 6 December 1757 | Maidstone | u | Lord Guernsey | Savile Finch | Succeeded to a peerage |
| 6 December 1757 | Southampton | u* | Hans Stanley | Hans Stanley | Lord of the Admiralty |
| 7 December 1757 | Ipswich | u* | Edward Vernon | Thomas Staunton | Death |
| 7 December 1757 | Weobley | u | Savage Mostyn | George Venables Vernon | Death |
| 10 December 1757 | Eye | u | Courthorpe Clayton | Courthorpe Clayton | Avener and Clerk Marshal |
| 10 December 1757 | Chipping Wycombe | u | John Waller | Edmund Waller | Death |
| 14 December 1757 | Richmond | u | John Yorke | Thomas Yorke | Death |
| 15 December 1757 | Wells | u | The Lord Digby | Robert Digby | Death |
| 20 December 1757 | Northumberland | u* | Sir William Middleton | George Shafto Delaval | Death |
| 21 January 1758 | Hindon | u | James Dawkins | James Calthorpe | Death |
| 28 January 1758 | Orford | u | Henry Bilson Legge | Henry Bilson Legge | Resignation upon becoming Surveyor of Petty Customs of the Port of London |
| 31 January 1758 | Cambridge | u | Viscount Dupplin | Viscount Dupplin | Chancellor of the Duchy of Lancaster |
| 3 February 1758 | East Retford | u* | John Shelley | John Shelley | Clerk of the Pipe |
| 14 February 1758 | Knaresborough | u | Richard Arundell | Robert Walsingham | Death |
| 3 March 1758 | Stirling Burghs | u | George Haldane | Robert Haldane | Resignation (Governor of Jamaica) |
| 22 March 1758 | County Durham | u | Viscount Barnard | Raby Vane | Succeeded to a peerage |
| 25 April 1758 | Eye | u | Nicholas Hardinge | Henry Townshend | Death |
| 26 April 1758 | Flintshire | u* | Sir Thomas Mostyn | Sir Roger Mostyn | Death |
| 1 June 1758 | Newport (I.o.W.) | u* | Ralph Jenison | Charles Holmes | Death |
| 24 June 1758 | Reigate | u* | Charles Cocks | Charles Cocks | Clerk of the Deliveries of the Ordnance |
| 29 June 1758 | Tiverton | u* | Henry Pelham | Sir Edward Hussey Montagu | Resignation (Commissioner of Customs) |
| 29 November 1758 | Cambridge | u | Viscount Dupplin | Soame Jenyns | Succeeded to a peerage |
| 30 November 1758 | City of London | u* | Slingsby Bethell | Sir Richard Glyn | Death |
| 1 December 1758 | Nottingham | u* | The Viscount Howe | William Howe | Death |
| 1 December 1758 | York | c | Sir John Armytage | William Thornton | Death |
| 2 December 1758 | Dunwich | u | Soame Jenyns | Alexander Forrester | Resignation to contest Cambridge |
| 2 December 1758 | Penryn | u | Richard Edgcumbe | John Plumptre | Succeeded to a peerage |
| 8 December 1758 | Wenlock | u | William Forester | George Forester | Death |
| 13 December 1758 | Bedfordshire | u | The Earl of Upper Ossory | Henry Osborn | Death |
| 22 December 1758 | Lancaster | u* | Edward Marton | George Warren | Death |
| 27 December 1758 | New Shoreham | u* | Richard Stratton | Sir William Peere Williams | Death |
| 29 December 1758 | Harwich | u | Viscount Duncannon | Thomas Sewell | Succeeded to a peerage |
| 30 December 1758 | Launceston | c | George Lee | Sir John St Aubyn | Death |
| 30 December 1758 | Launceston | c* | Sir John St Aubyn | Peter Burrell | By-election results reversed on petition 21 February 1759 |
| 3 January 1759 | Yorkshire | u* | Sir Conyers Darcy | Sir George Savile | Death |
| 26 January 1759 | Winchelsea | u | Thomas Orby Hunter | George Gray | Resignation (Superintendent of Supplies to the Allied Armies in Germany) |
| 10 February 1759 | Steyning | u* | Hitch Younge | Frazer Honywood | Death |
| 15 February 1759 | Bishop's Castle | u | Walter Waring | Henry Grenville | Resignation |
| 21 March 1759 | Malmesbury | u* | Lord George Bentinck | Thomas Conolly | Death |
| 20 April 1759 | Suffolk | u* | Sir Cordell Firebrace | Rowland Holt | Death |
| 8 May 1759 | Essex | u* | Sir John Abdy | Sir William Maynard | Death |
| 25 May 1759 | Camelford | u* | Sir John Lade | Bartholomew Burton | Death |
| 4 June 1759 | Banbury | u* | Lord North | Lord North | Junior Lord of the Treasury |
| 6 June 1759 | Northampton | u | Charles Montagu | Frederick Montagu | Death |
| 8 June 1759 | Dover | u* | Hugh Valence Jones | Edward Simpson | Resignation (Irish Revenue Commissioner) |
| 14 June 1759 | Westmorland | u | John Dalston | Robert Lowther | Death |
| 19 November 1759 | Oxford | u* | Thomas Rowney | Sir Thomas Stapleton | Death |
| 20 November 1759 | Ipswich | u* | Samuel Kent | George Montgomerie | Death |
| 21 November 1759 | Montgomery | u* | William Bodvell | Richard Clive | Death |
| 24 November 1759 | Haslemere | u* | James More Molyneux | Thomas More Molyneux | Death |
| 24 November 1759 | Okehampton | u | Thomas Potter | George Brydges Rodney | Death |
| 26 November 1759 | Totnes | u* | Sir Richard Lloyd | Richard Savage Lloyd | Resignation (Baron of the Exchequer) |
| 1 December 1759 | Leominster | u* | Sir Charles Hanbury Williams | Chase Price | Death |
| 1 December 1759 | Liskeard | u* | Edmund Nugent | Philip Stephens | Resignation (Commission in the Army) |
| 3 December 1759 | Hampshire | u | Marquess of Winchester | Henry Bilson Legge | Succeeded to a peerage |
| 10 December 1759 | Old Sarum | u | Viscount Pulteney | Viscount Pulteney | Accepted a Commission in the Army |
| 13 December 1759 | Hertford | u | George Harrison | Viscount Fordwich | Death |
| 20 December 1759 | Orford | u* | Henry Bilson Legge | Charles FitzRoy | Surveyor of Petty Customs of the Port of London |
| 26 December 1759 | Bristol | u* | Robert Nugent | Robert Nugent | Vice-Treasurer of Ireland |
| 1 January 1760 | Tavistock | u* | Richard Rigby | Richard Rigby | Master of the Rolls in Ireland |
| 2 January 1760 | Norwich | u* | Edward Bacon | Edward Bacon | Lord of Trade |
| 17 January 1760 | Lanarkshire | c* | James Vere | Daniel Campbell | Death |
| 18 January 1760 | Dysart Burghs | u* | James Oswald | James Oswald | Junior Lord of the Treasury |
| 25 January 1760 | Eye | u* | Henry Townshend | Viscount Brome | Resignation |
| 26 January 1760 | Orford | u* | Charles FitzRoy | Charles FitzRoy | Groom of the Bedchamber |
| 26 January 1760 | Plymouth | u* | Samuel Dicker | George Pocock | Death |
| 30 January 1760 | St Germans | u* | Edward Eliot | Edward Eliot | Lord of Trade |
| 29 March 1760 | Southampton | u* | Anthony Langley Swymmer | Henry Dawkins | Death |
| 31 March 1760 | Guildford | u* | Richard Onslow | George Onslow | Death |
| 5 April 1760 | Winchelsea | u | George Gray | Thomas Orby Hunter | Resignation |
| 2 June 1760 | Chipping Wycombe | u* | The Earl of Shelburne | Viscount FitzMaurice | Became a British Peer |
| 18 June 1760 | Kent | u* | Lewis Watson | Sir Wyndham Knatchbull Wyndham | Elevated to the peerage |
| 2 December 1760 | Seaford | u* | James Peachey | James Peachey | Groom of the Bedchamber |
| 4 December 1760 | St Mawes | u | Henry Seymour Conway | Henry Seymour Conway | Groom of the Bedchamber |
| 8 December 1760 | Orford | u | Charles FitzRoy | Charles FitzRoy | Groom of the Bedchamber |
| 8 December 1760 | Orford | u* | John Offley | John Offley | Groom of the Bedchamber |
| 9 December 1760 | County Durham | c* | George Bowes | Robert Shafto | Death |
| 1 January 1761 | Berwickshire | u* | Alexander Hume Campbell | James Pringle | Death |
| 12 January 1761 | Edinburghshire | u* | Robert Dundas | Sir Alexander Gilmour | Resignation (Lord President of the Court of Session) |
| 14 January 1761 | Cambridge University | u* | Edward Finch | Edward Finch | Surveyor of the King's Private Roads |

### 12th Parliament (1761–1768)

| Date | Constituency | c/u | Former Incumbent | Winner | Cause |
| 4 December 1761 | Bramber | u(*) | Andrew Archer | The Lord Winterton | Chose to sit for Coventry |
| 4 December 1761 | Eye | u | Henry Cornwallis | Henry Townshend | Death |
| 4 December 1761 | Ilchester | u | The Earl of Egmont | William Wilson | Chose to sit for Bridgwater |
| 4 December 1761 | New Shoreham | u | Sir William Peere Williams | The Lord Pollington | Death |
| 4 December 1761 | Winchelsea | u* | The Earl of Thomond | Thomas Sewell | Cofferer of the Household |
| 5 December 1761 | Gatton | u | Sir James Colebrooke | Edward Harvey | Death |
| 5 December 1761 | Harwich | u* | John Roberts | John Roberts | Lord of Trade |
| 5 December 1761 | Chipping Wycombe | u* | Viscount FitzMaurice | Isaac Barré | Succeeded to a peerage |
| 7 December 1761 | Durham City | c(*) | Henry Lambton | Ralph Gowland | Death |
| 7 December 1761 | Durham City | c(*) | Ralph Gowland | John Lambton | By-election results reversed on petition 11 May 1762 |
| 7 December 1761 | Fowey | u | George Edgcumbe | Robert Walsingham | Succeeded to a peerage |
| 7 December 1761 | Minehead | u | The Earl of Thomond | The Earl of Thomond | Cofferer of the Household |
| 7 December 1761 | Newport | u* | John Lee | William de Grey | Death |
| 8 December 1761 | East Grinstead | u | Lord George Sackville | Sir Thomas Hales | Chose to sit for Hythe |
| 8 December 1761 | Plympton Erle | u | George Treby | George Hele Treby | Death |
| 10 December 1761 | Derbyshire | u* | Lord George Cavendish | Lord George Cavendish | Comptroller of the Household |
| 10 December 1761 | Dunbartonshire | u* | John Campbell | Archibald Edmonstone | Became a Scottish Peer |
| 11 December 1761 | Malton | u* | Henry Finch | Savile Finch | Death |
| 17 December 1761 | Old Sarum | u* | Thomas Pitt | Thomas Pitt | Death |
| 18 December 1761 | Clitheroe | u* | Thomas Lister | Nathaniel Lister | Death |
| 28 December 1761 | Ayr Burghs | u | Lord Frederick Campbell | Alexander Wedderburn | Chose to sit for Glasgow Burghs |
| 28 December 1761 | Cumberland | u | Sir James Lowther | Sir Wilfrid Lawson | Chose to sit for Westmorland |
| 1 February 1762 | Downton | u | Charles Pratt | Thomas Pym Hales | Resignation (Chief Justice of the Common Pleas) |
| 1 February 1762 | Reigate | u* | Charles Yorke | Charles Yorke | Attorney General for England and Wales |
| 1 February 1762 | Wigan | u* | Fletcher Norton | Sir Fletcher Norton | Solicitor General for England and Wales |
| 19 February 1762 | Wigtown Burghs | u | Archibald Montgomerie | Keith Stewart | Chose to sit for Ayrshire |
| 24 February 1762 | Hampshire | u* | Sir Simeon Stuart | Sir Simeon Stuart | Chamberlain of the Exchequer |
| 27 February 1762 | Edinburgh | u | George Lind | James Coutts | Resignation (Conservator of Scottish Privileges in the Netherlands) |
| 18 March 1762 | Wigtownshire | u | John Hamilton | James Murray | Resignation to contest Wigtown Burghs |
| 20 March 1762 | Rye | u* | Phillips Gybbon | John Norris | Death |
| 24 March 1762 | Taunton | u | The Earl of Tyrconnell | Laurence Sulivan | Death |
| 25 March 1762 | Leicestershire | u* | Edward Smith | Sir Thomas Cave | Death |
| 7 April 1762 | Newport (I.o.W.) | u | Charles Holmes | William Rawlinson Earle | Death |
| 15 April 1762 | Wigtown Burghs | u | Keith Stewart | John Hamilton | Resignation |
| 27 April 1762 | Westminster | u* | Edward Cornwallis | Edwin Sandys | Resignation (Governor of Gibraltar) |
| 4 May 1762 | Bramber | u | William Fitzherbert | George Venables Vernon | Resignation to contest Derby |
| 5 May 1762 | Bridgwater | u* | The Earl of Egmont | Viscount Perceval | Became a British Peer |
| 5 May 1762 | Derby | u* | George Venables Vernon | William Fitzherbert | Elevated to the peerage |
| 7 May 1762 | Dorchester | u* | The Lord Milton | John Damer | Became a British Peer |
| 11 May 1762 | Marlborough | u* | Lord Brudenell | James Long | Elevated to the peerage |
| 14 May 1762 | Tiverton | u | Sir Edward Hussey Montagu | Charles Gore | Elevated to the peerage |
| 19 May 1762 | Devon | u* | Sir William Courtenay | John Parker | Elevated to the peerage |
| 24 May 1762 | Bodmin | u | John Parker | Sir Christopher Treise | Resignation to contest Devon |
| 28 May 1762 | East Looe | u* | Francis Gashry | The Viscount Palmerston | Death |
| 3 June 1762 | Buteshire | u | James Stuart | Henry Wauchope | Death |
| 5 June 1762 | Huntingdonshire | u | Viscount Mandeville | Lord Charles Greville Montagu | Succeeded to a peerage |
| 7 June 1762 | Buckingham | u* | George Grenville | George Grenville | Northern Secretary |
| 9 June 1762 | King's Lynn | u* | Sir John Turner | Sir John Turner | Junior Lord of the Treasury |
| 9 June 1762 | Weymouth and Melcombe Regis | u | Sir Francis Dashwood | Sir Francis Dashwood | Chancellor of the Exchequer |
| 11 June 1762 | Plymouth | u* | The Viscount Barrington | The Viscount Barrington | Treasurer of the Navy |
| 12 June 1762 | Weobley | u | Marquess of Titchfield | William Lynch | Succeeded to a peerage |
| 17 June 1762 | Selkirkshire | u | Gilbert Elliot | Gilbert Elliot | Treasurer of the Chamber |
| 30 June 1762 | Cockermouth | u | Charles Jenkinson | Charles Jenkinson | Treasurer of the Ordnance |
| 30 November 1762 | Buckingham | u* | George Grenville | George Grenville | First Lord of the Admiralty |
| 30 November 1762 | Dunwich | u | Henry Fox | Henry Fox | Clerk of the Pells in Ireland |
| 30 November 1762 | East Grinstead | u* | Sir Thomas Hales | John Irwin | Death |
| 1 December 1762 | Eye | u | Henry Townshend | Richard Burton | Death |
| 1 December 1762 | Eye | u* | Viscount Brome | The Viscount Allen | Succeeded to a peerage |
| 1 December 1762 | Lyme Regis | u* | Thomas Fane | Lord Burghersh | Succeeded to a peerage |
| 1 December 1762 | Weymouth and Melcombe Regis | u | The Lord Waltham | Richard Jackson | Death |
| 3 December 1762 | Great Grimsby | u | Henry Knight | The Lord Luxborough | Death |
| 6 December 1762 | Corfe Castle | u | Henry Bankes | John Campbell | Resignation (Commissioner of Customs) |
| 13 December 1762 | Nottinghamshire | u* | Lord Robert Manners Sutton | Thomas Willoughby | Death |
| 13 December 1762 | Warwick | u | Viscount Dungarvan | Paul Methuen | Succeeded to a peerage |
| 15 December 1762 | Abingdon | u* | John Morton | John Morton | Chief Justice of Chester |
| 16 December 1762 | Oxford University | u | Peregrine Palmer | Sir Walter Wagstaffe Bagot | Death |
| 21 December 1762 | Lancashire | u* | Lord Strange | Lord Strange | Chancellor of the Duchy of Lancaster |
| 22 December 1762 | Aylesbury | u | Welbore Ellis | Welbore Ellis | Secretary at War |
| 23 December 1762 | Tavistock | u* | Richard Rigby | Richard Rigby | Vice-Treasurer of Ireland |
| 27 December 1762 | Bewdley | u(*) | Sir Edward Winnington | Sir Edward Winnington | Storekeeper of the Ordnance |
| 27 December 1762 | Cumberland | u* | Sir Wilfrid Lawson | Sir James Lowther | Death |
| 27 December 1762 | Ipswich | u | The Lord Orwell | The Lord Orwell | Lord of Trade |
| 27 December 1762 | Newcastle-under-Lyme | u | Henry Vernon | Sir Lawrence Dundas | Death |
| 27 December 1762 | Weobley | u* | Henry Frederick Thynne | Henry Frederick Thynne | Third Clerk Comptroller of the Green Cloth |
| 28 December 1762 | Christchurch | u* | James Harris | James Harris | Lord of the Admiralty |
| 28 December 1762 | Yarmouth | u* | Henry Holmes | Jeremiah Dyson | Death |
| 29 December 1762 | Calne | u* | Daniel Bull | Thomas FitzMaurice | Resignation (Commissioner of Taxes) |
| 1 January 1763 | Huntingdonshire | u | The Lord Carysfort | The Lord Carysfort | Lord of the Admiralty |
| 3 January 1763 | Launceston | u* | Humphry Morice | Humphry Morice | Comptroller of the Household |
| 7 January 1763 | Fifeshire | u | James St Clair | James Wemyss | Death |
| 12 January 1763 | Oxfordshire | u* | Lord Charles Spencer | Lord Charles Spencer | Out-Ranger of Windsor Forest and Surveyor of Gardens and Waters |
| 3 February 1763 | Knaresborough | u* | Sir Henry Slingsby | Sir Anthony Thomas Abdy | Death |
| 21 February 1763 | Lewes | u | Sir Francis Poole | William Plumer | Death |
| 24 February 1763 | Bury St Edmunds | u | Augustus John Hervey | William Hervey | Resignation |
| 1 March 1763 | Harwich | u* | Charles Townshend | Charles Townshend | First Lord of Trade |
| 3 March 1763 | Westmorland | u | Sir James Lowther | Robert Lowther | Resignation to contest Cumberland |
| 15 March 1763 | Westminster | u* | Viscount Pulteney | Lord Warkworth | Death |
| 16 March 1763 | Richmond | u | Earl of Ancram | Thomas Dundas | Resignation |
| 7 April 1763 | Totnes | u | Browse Trist | Henry Seymour | Resignation |
| 21 April 1763 | Yarmouth | u | The Lord Holmes | The Lord Holmes | Governor of the Isle of Wight |
| 23 April 1763 | Christchurch | u* | James Harris | James Harris | Junior Lord of the Treasury |
| 23 April 1763 | Wells | u | The Lord Digby | The Lord Digby | Lord of the Admiralty |
| 23 April 1763 | Winchelsea | u* | Thomas Orby Hunter | Thomas Orby Hunter | Junior Lord of the Treasury |
| 25 April 1763 | Buckingham | u* | George Grenville | George Grenville | First Lord of the Treasury and Chancellor of the Exchequer |
| 26 April 1763 | Maldon | c* | Bamber Gascoyne | John Huske | Lord of Trade |
| 26 April 1763 | Old Sarum | u | Thomas Pitt | Thomas Pitt | Lord of the Admiralty |
| 27 April 1763 | Gloucestershire | u* | Norborne Berkeley | Thomas Tracy | Resignation |
| 27 April 1763 | Pontefract | u | William Gerard Hamilton | William Gerard Hamilton | Chancellor of the Exchequer of Ireland |
| 28 April 1763 | Bath | c* | The Viscount Ligonier | Sir John Sebright | Resignation |
| 28 April 1763 | Dartmouth | u* | The Viscount Howe | The Viscount Howe | Naval Lord |
| 28 April 1763 | St Ives | u | Charles Hotham | Charles Hotham | Groom of the Bedchamber |
| 29 April 1763 | Dunwich | u | Henry Fox | Sir Jacob Garrard Downing | Elevated to the peerage |
| 30 April 1763 | Weymouth and Melcombe Regis | u | Sir Francis Dashwood | Charles Walcott | Succeeded to a peerage |
| 4 May 1763 | Oxfordshire | u* | Lord Charles Spencer | Lord Charles Spencer | Comptroller of the Household |
| 6 May 1763 | Kirkcudbright Stewartry | u | John Ross Mackye | John Ross Mackye | Treasurer of the Ordnance |
| 11 May 1763 | Glamorganshire | u | Sir Edmond Thomas | Sir Edmond Thomas | Surveyor-General of Woods North and South of Trent |
| 12 May 1763 | Ross-shire | u* | James Stuart Mackenzie | James Stuart Mackenzie | Keeper of the Privy Seal of Scotland |
| 18 May 1763 | Dysart Burghs | u | James Oswald | James Oswald | Vice-Treasurer of Ireland |
| 21 November 1763 | Bridgwater | u* | Edward Southwell | The Lord Coleraine | Resignation to contest Gloucestershire |
| 21 November 1763 | Northampton | u | Spencer Compton | Lucy Knightly | Succeeded to a peerage |
| 22 November 1763 | Honiton | c* | Henry Reginald Courtenay | Sir George Yonge | Death |
| 22 November 1763 | Horsham | u* | Charles Ingram | Robert Pratt | Became a Scottish Peer |
| 22 November 1763 | Milborne Port | u* | Thomas Medlycott | Thomas Hutchings Medlycott | Death |
| 22 November 1763 | Newcastle-under-Lyme | u | John Waldegrave | Thomas Gilbert | Succeeded to a peerage |
| 22 November 1763 | Tavistock | u* | Richard Neville Neville | Richard Neville Neville | Paymaster of Pensions |
| 23 November 1763 | Gloucestershire | u* | Thomas Chester | Edward Southwell | Death |
| 24 November 1763 | Bishop's Castle | c* | Francis Child | George Clive | Death |
| 25 November 1763 | Plympton Erle | u* | George Hele Treby | Paul Henry Ourry | Death |
| 30 November 1763 | Kent | u* | Sir Wyndham Knatchbull Wyndham | Sir Brook Bridges | Death |
| 1 December 1763 | Saltash | u | John Clevland | Augustus John Hervey | Death |
| 5 December 1763 | Brecon | u* | Thomas Morgan | Charles Morgan | Resignation to contest Monmouthshire |
| 13 December 1763 | Essex | c* | William Harvey | John Luther | Death |
| 15 December 1763 | Monmouthshire | u* | William Morgan | Thomas Morgan | Death |
| 24 December 1763 | West Looe | u | Francis Buller | Francis Buller | Groom Porter |
| 24 December 1763 | Wigan | c | Sir Fletcher Norton | Sir Fletcher Norton | Attorney General for England and Wales |
| 27 December 1763 | Newport (Cornwall) | u* | William de Grey | William de Grey | Solicitor General for England and Wales |
| 29 December 1763 | Stirlingshire | u | James Campbell | James Campbell | Governor of Stirling Castle |
| 5 January 1764 | Westmorland | u* | Robert Lowther | John Robinson | Resignation |
| 17 January 1764 | Argyllshire | u | Dugald Campbell | Lord William Campbell | Resignation (Master of the Revels in Scotland) |
| 23 January 1764 | Hereford | c* | John Symons | John Scudamore | Death |
| 25 January 1764 | Aylesbury | c* | John Wilkes | Welbore Anthony Bacon | Expulsion |
| 9 February 1764 | Steyning | u | Frazer Honywood | Richard Fuller | Death |
| 18 February 1764 | Dunwich | u* | Sir Jacob Garrard Downing | Miles Barne | Death |
| 22 March 1764 | Cambridgeshire | u* | Viscount Royston | Sir John Hynde Cotton | Succeeded to a peerage |
| 23 March 1764 | Perthshire | c* | John Murray | David Graeme | Became a Scottish Peer |
| 23 March 1764 | Rochester | u | Viscount Parker | Sir Charles Hardy | Succeeded to a peerage |
| 2 April 1764 | Corfe Castle | u* | Viscount Malpas | John Bond | Death |
| 11 April 1764 | Norfolk | u* | George Townshend | Thomas de Grey | Succeeded to a peerage |
| 23 April 1764 | Cambridge | u* | Charles Sloane Cadogan | Charles Sloane Cadogan | Surveyor of Gardens and Waters |
| 24 April 1764 | Bedford | u* | Richard Vernon | Richard Vernon | Third Clerk Comptroller of the Green Cloth |
| 24 April 1764 | Yarmouth | u | Jeremiah Dyson | Jeremiah Dyson | Lord of Trade |
| 15 January 1765 | Devizes | c* | John Garth | Charles Garth | Death |
| 15 January 1765 | Southampton | u* | Hans Stanley | Hans Stanley | Governor of the Isle of Wight |
| 15 January 1765 | Wallingford | u | John Hervey | Sir George Pigot | Death |
| 15 January 1765 | Winchelsea | u* | Sir Thomas Sewell | Sir Thomas Sewell | Master of the Rolls |
| 16 January 1765 | Midhurst | u | William Hamilton | Bamber Gascoyne | Resignation |
| 17 January 1765 | Brackley | u* | Robert Wood | Robert Wood | Groom Porter |
| 18 January 1765 | Berwick-upon-Tweed | u* | John Craufurd | Sir John Delaval | Death |
| 18 January 1765 | Wilton | u* | Nicholas Herbert | Nicholas Herbert | Secretary of Jamaica |
| 18 January 1765 | Yarmouth | u | The Lord Holmes | John Eames | Death |
| 19 January 1765 | Bossiney | u | John Richmond Webb | John Richmond Webb | Judge of the Brecon Circuit |
| 19 January 1765 | Dover | u | Edward Simpson | Marquess of Lorne | Death |
| 19 January 1765 | West Looe | c | Francis Buller | John Sargent | Death |
| 21 January 1765 | Fowey | c* | Jonathan Rashleigh | Philip Rashleigh | Death |
| 21 January 1765 | Stamford | u* | John Chaplin | George René Aufrère | Death |
| 4 February 1765 | Bridport | u | Sir Gerard Napier | Benjamin Way | Death |
| 6 February 1765 | Hampshire | u | Henry Bilson Legge | Sir Richard Mill | Death |
| 6 February 1765 | Salisbury | c | Julines Beckford | Samuel Eyre | Death |
| 6 February 1765 | Warwickshire | u | William Craven | William Throckmorton Bromley | Succeeded to a peerage |
| 12 February 1765 | Pembrokeshire | c* | Sir John Philipps | Sir Richard Philipps | Death |
| 15 February 1765 | Brackley | u* | Marshe Dickinson | Viscount Hinchingbrooke | Death |
| 4 March 1765 | Stafford | c | William Richard Chetwynd | John Crewe | Death |
| 26 April 1765 | Ilchester | c* | Joseph Tolson Lockyer | Peter Legh | Death |
| 15 May 1765 | Cornwall | u* | James Buller | Sir John Molesworth | Death |
| 30 May 1765 | Poole | c | Joseph Gulston | Joseph Gulston | Resignation |
| 3 June 1765 | Devizes | u* | William Willy | James Sutton | Death |
| 3 June 1765 | Harwich | u* | Charles Townshend | Charles Townshend | Paymaster of the Forces |
| 5 June 1765 | Anstruther Burghs | u | Sir Henry Erskine | Sir Henry Erskine | Secretary to the Order of the Thistle |
| 7 June 1765 | Kincardineshire | u | Sir James Carnegie | Sir Alexander Ramsay Irvine | Death |
| 11 June 1765 | St Germans | u | Philip Stanhope | William Hussey | Resignation |
| 13 June 1765 | Selkirkshire | u | Gilbert Elliot | John Pringle | Resignation to contest Roxburghshire |
| 20 June 1765 | Roxburghshire | u* | Walter Scott | Gilbert Elliot | Resignation (Receiver and Cashier of Excise in Scotland) |
| 24 June 1765 | Glasgow Burghs | u* | Lord Frederick Campbell | Lord Frederick Campbell | Keeper of the Privy Seal of Scotland |
| 17 November 1765 | Hythe | u | William Glanville | William Amherst | Death |
| 23 December 1765 | Dorchester | u* | Thomas Foster | William Ewer | Death |
| 23 December 1765 | Harwich | u* | John Roberts | John Roberts | Lord of Trade |
| 23 December 1765 | Leicester | u | James Wigley | Anthony James Keck | Death |
| 23 December 1765 | Reigate | u* | Charles Yorke | Charles Yorke | Attorney General for England and Wales |
| 23 December 1765 | Rochester | c | Isaac Townsend | Grey Cooper | Death |
| 23 December 1765 | Seaford | u* | The Viscount Gage | The Viscount Gage | Paymaster of Pensions |
| 23 December 1765 | New Shoreham | u* | The Viscount Midleton | Samuel Cornish | Death |
| 23 December 1765 | Southwark | u* | Alexander Hume | Henry Thrale | Death |
| 23 December 1765 | Tamworth | u* | Viscount Villiers | Edward Thurlow | Vice-Chamberlain of the Household |
| 23 December 1765 | Thetford | u* | Henry Seymour Conway | Henry Seymour Conway | Southern Secretary |
| 23 December 1765 | Wendover | u* | Verney Lovett | Edmund Burke | Resignation |
| 23 December 1765 | Whitchurch | u* | Thomas Townshend | Thomas Townshend | Junior Lord of the Treasury |
| 23 December 1765 | New Windsor | u* | Augustus Keppel | Augustus Keppel | Naval Lord |
| 23 December 1765 | Great Yarmouth | u* | Charles Townshend | Charles Townshend | Lord of the Admiralty |
| 24 December 1765 | Berwick-upon-Tweed | u | Thomas Watson | Wilmot Vaughan | Resignation (Steward of the Manor of Shippon, Berkshire) |
| 24 December 1765 | Winchester | u* | Lord Harry Powlett | George Paulet | Succeeded to a peerage |
| 26 December 1765 | Dartmouth | u* | The Viscount Howe | The Viscount Howe | Treasurer of the Navy |
| 26 December 1765 | Derby | u* | William Fitzherbert | William Fitzherbert | Lord of Trade |
| 26 December 1765 | Hedon | u* | Sir Charles Saunders | Sir Charles Saunders | Naval Lord |
| 26 December 1765 | Hythe | u | Lord George Sackville | Lord George Sackville | Vice-Treasurer of Ireland |
| 26 December 1765 | Leicestershire | u* | Sir Thomas Palmer | Sir John Palmer | Death |
| 26 December 1765 | Liverpool | u* | Sir William Meredith | Sir William Meredith | Lord of the Admiralty |
| 26 December 1765 | Newport (I.o.W.) | u | Thomas Lee Dummer | Thomas Dummer | Death |
| 26 December 1765 | Plymouth | u* | The Viscount Barrington | The Viscount Barrington | Secretary at War |
| 26 December 1765 | Pontefract | u* | The Viscount Galway | The Viscount Galway | Master of the Staghounds |
| 26 December 1765 | Stamford | u* | George Bridges Brudenell | George Bridges Brudenell | Second Clerk Comptroller of the Green Cloth |
| 26 December 1765 | Sussex | u* | Thomas Pelham | Thomas Pelham | Comptroller of the Household |
| 26 December 1765 | Thirsk | u | Henry Grenville | James Grenville | Resignation (Commissioner of Customs) |
| 26 December 1765 | Wells | c(*) | The Lord Digby | Robert Child | Became a British Peer (Two Returns Made) |
| 26 December 1765 | Wells | c(*) | The Lord Digby | Peter Taylor | Became a British Peer (Two Returns Made) |
| 26 December 1765 | Wells | c(*) | Robert Child | Robert Child | Child Declared elected 15 January 1766 |
| 26 December 1765 | Wells | c(*) | Peter Taylor | Robert Child | Child Declared elected 15 January 1766 |
| 27 December 1765 | Aldborough | u(*) | Andrew Wilkinson | Viscount Villiers | Resignation (Storekeeper of the Ordnance) |
| 27 December 1765 | East Looe | u* | The Viscount Palmerston | The Viscount Palmerston | Lord of Trade |
| 27 December 1765 | East Looe | u* | John Buller | John Buller | Lord of the Admiralty |
| 27 December 1765 | Guildford | u* | George Onslow | George Onslow | Out-Ranger of Windsor Forest |
| 28 December 1765 | Higham Ferrers | u | John Yorke | John Yorke | Lord of Trade |
| 28 December 1765 | Huntingdonshire | u | Lord Charles Greville Montagu | Robert Bernard | Resignation (Governor of South Carolina) |
| 30 December 1765 | East Grinstead | u | Earl of Middlesex | Sir Charles Farnaby | Succeeded to a peerage |
| 30 December 1765 | Knaresborough | u* | Sir Anthony Thomas Abdy | Sir Anthony Thomas Abdy | King's Counsel |
| 30 December 1765 | Knaresborough | u | Lord John Cavendish | Lord John Cavendish | Junior Lord of the Treasury |
| 2 January 1766 | Cardiff Boroughs | u* | Herbert Mackworth | Herbert Mackworth | Death |
| 2 January 1766 | Edinburghshire | u* | Sir Alexander Gilmour | Sir Alexander Gilmour | Third Clerk Comptroller of the Green Cloth |
| 8 January 1766 | Surrey | u* | George Onslow | George Onslow | Junior Lord of the Treasury |
| 8 January 1766 | Worcestershire | u* | William Dowdeswell | William Dowdeswell | Chancellor of the Exchequer |
| 9 January 1766 | Monmouthshire | u* | Capel Hanbury | John Hanbury | Death |
| 17 January 1766 | Anstruther Burghs | c* | Sir Henry Erskine | Sir John Anstruther | Death |
| 17 January 1766 | Perth Burghs | u | George Dempster | George Dempster | Secretary to the Order of the Thistle |
| 24 January 1766 | Bossiney | u* | John Richmond Webb | Lord Mount Stuart | Death |
| 27 January 1766 | Leicester | u | George Wrighte | John Darker | Death |
| 4 February 1766 | Helston | u | Francis Godolphin | William Windham | Succeeded to a peerage |
| 7 February 1766 | Dartmouth | u* | John Jeffreys | Richard Hopkins | Death |
| 15 March 1766 | Kingston upon Hull | u* | Sir George Montgomery Metham | William Weddell | Resignation (Clerk of the Wardrobe) |
| 1 April 1766 | Bridgnorth | u* | William Whitmore | William Whitmore | Warden of the Mint |
| 2 April 1766 | Berkshire | u* | Henry Pye | Thomas Craven | Death |
| 4 April 1766 | Lostwithiel | u | George Howard | Viscount Beauchamp | Resignation (Governor of Minorca) |
| 22 April 1766 | Calne | u | Thomas Duckett | John Calcraft | Death |
| 8 May 1766 | Shropshire | u* | Richard Lyster | Charles Baldwyn | Death |
| 28 May 1766 | Dumfries Burghs | u | Thomas Miller | James Montgomery | Resignation (Lord Justice Clerk) |
| 16 June 1766 | Great Bedwyn | u | William Woodley | William Burke | Resignation pending appointment as Governor of the Leeward Islands |
| 17 November 1766 | Banbury | u* | Lord North | Lord North | Joint Paymaster of the Forces |
| 17 November 1766 | Coventry | u* | James Hewitt | Henry Seymour Conway | Resignation (Puisne Justice of the King's Bench) |
| 17 November 1766 | Harwich | u | Charles Townshend | Charles Townshend | Chancellor of the Exchequer |
| 17 November 1766 | Honiton | u* | Sir George Yonge | Sir George Yonge | Lord of the Admiralty |
| 18 November 1766 | Buckingham | u | James Grenville | James Grenville | Vice-Treasurer of Ireland |
| 18 November 1766 | Christchurch | u* | Thomas Robinson | Thomas Robinson | Lord of Trade |
| 18 November 1766 | Newport (Cornwall) | u* | William de Grey | William de Grey | Attorney General for England and Wales |
| 18 November 1766 | Chipping Wycombe | u* | Isaac Barré | Isaac Barré | Vice-Treasurer of Ireland |
| 19 November 1766 | Barnstaple | u* | Sir George Amyand | John Clevland | Death |
| 19 November 1766 | Bath | c* | William Pitt | John Smith | Elevation to the peerage |
| 19 November 1766 | Penryn | u* | Sir Edward Turner | Francis Basset | Death |
| 19 November 1766 | Scarborough | u* | William Osbaldeston | Fountayne Wentworth Osbaldeston | Death |
| 20 November 1766 | East Looe | u | The Viscount Palmerston | The Viscount Palmerston | Lord of the Admiralty |
| 25 November 1766 | East Retford | u | John Shelley | John Shelley | Treasurer of the Household |
| 27 November 1766 | Middlesex | u* | George Cooke | George Cooke | Joint Paymaster of the Forces |
| 4 December 1766 | Nairnshire | u | Pryse Campbell | Pryse Campbell | Junior Lord of the Treasury |
| 5 December 1766 | Ross-shire | u* | James Stuart Mackenzie | James Stuart Mackenzie | Keeper of the Privy Seal of Scotland |
| 9 December 1766 | Queenborough | u* | Sir Peircy Brett | Sir Peircy Brett | Naval Lord |
| 10 December 1766 | Portsmouth | u* | Sir Edward Hawke | Sir Edward Hawke | First Lord of the Admiralty |
| 12 December 1766 | Argyllshire | u* | Lord William Campbell | Robert Campbell | Resignation (Governor of Nova Scotia) |
| 15 December 1766 | Southampton | u* | Hans Stanley | Hans Stanley | Cofferer of the Household |
| 16 December 1766 | Bristol | u* | Robert Nugent | Robert Nugent | First Lord of Trade |
| 22 December 1766 | Boston | u* | John Michell | Charles Amcotts | Death |
| 23 December 1766 | Dover | u | Marquess of Lorne | John Bindley | Elevated to the peerage |
| 23 December 1766 | Lewes | u | Thomas Sergison | Lord Edward Bentinck | Death |
| 9 January 1767 | Aberdeen Burghs | u | David Scott | Sir John Lindsay | Death |
| 9 January 1767 | Cockermouth | u | Charles Jenkinson | John Elliot | Lord of the Admiralty |
| 20 January 1767 | Appleby | u* | John Stanwix | Charles Jenkinson | Death |
| 26 January 1767 | Chichester | u* | Lord George Henry Lennox | William Keppel | Resignation to contest Sussex |
| 28 January 1767 | Somerset | u | Thomas Prowse | Sir Thomas Dyke Acland | Death |
| 3 February 1767 | Sussex | u* | John Butler | Lord George Henry Lennox | Death |
| 4 February 1767 | Tregony | u* | William Trevanion | Thomas Pownall | Death |
| 5 February 1767 | Roxburghshire | u* | Sir Gilbert Elliot | Gilbert Elliot | Keeper of the Signet |
| 12 February 1767 | Steyning | u* | John Thomlinson | Sir John Filmer | Death |
| 11 March 1767 | Preston | u* | Nicholas Fazakerley | Sir Peter Leicester | Death |
| 21 March 1767 | Leominster | c | Chase Price | Edward Willes | Resignation |
| 24 March 1767 | Wiltshire | u* | Sir Robert Long | Thomas Goddard | Death |
| 7 April 1767 | Bedfordshire | u* | Marquess of Tavistock | The Earl of Upper Ossory | Death |
| 18 May 1767 | Herefordshire | u* | Sir John Morgan | Thomas Foley | Death |
| 8 June 1767 | Boroughbridge | u | Brice Fisher | James West | Death |
| 8 June 1767 | New Woodstock | u* | Anthony Keck | William Gordon | Death |
| 16 June 1767 | Truro | u* | John Boscawen | Edward Hugh Boscawen | Death |
| 1 July 1767 | Helston | u* | Sir John Evelyn | William Evelyn | Death |
| 10 July 1767 | West Looe | u* | Sir William Trelawny | James Townsend | Resignation (Governor of Jamaica) |
| 30 November 1767 | Banbury | u* | Lord North | Lord North | Chancellor of the Exchequer |
| 30 November 1767 | Harwich | u | Charles Townshend | Thomas Bradshaw | Death |
| 1 December 1767 | Dartmouth | u* | Richard Hopkins | Richard Hopkins | Third Clerk Comptroller of the Green Cloth |
| 2 December 1767 | Great Bedwyn | u | Thomas Cotes | Sir Thomas Fludyer | Death |
| 3 December 1767 | Monmouth | u* | Benjamin Bathurst | John Stepney | Death |
| 4 December 1767 | Amersham | u | Benet Garrard | John Affleck | Death |
| 4 December 1767 | Appleby | u* | Charles Jenkinson | Charles Jenkinson | Junior Lord of the Treasury |
| 4 December 1767 | Liverpool | u* | Sir Ellis Cunliffe | Richard Pennant | Death |
| 4 December 1767 | Whitchurch | u* | Thomas Townshend | Thomas Townshend | Joint Paymaster of the Forces |
| 7 December 1767 | Ashburton | u | John Harris | Robert Palk | Death |
| 16 December 1767 | Glamorganshire | u | Sir Edmond Thomas | Richard Turbervill | Death |
| 17 December 1767 | Petersfield | u | Richard Pennant | Richard Croftes | Resignation to contest Liverpool |
| 19 December 1767 | Exeter | u | John Tuckfield | William Spicer | Death |
| 31 December 1767 | Peeblesshire | u | John Dickson | Adam Hay | Death |
| 28 January 1768 | Tavistock | u* | Richard Rigby | Richard Rigby | Vice-Treasurer of Ireland |
| 29 January 1768 | Chippenham | u* | Sir Samuel Fludyer | Sir Thomas Fludyer | Death |
| 6 February 1768 | Leominster | u* | Edward Willes | John Carnac | Resignation (Puisne justice of the King's Bench) |
| 3 February 1768 | Oxford University | u | Sir Walter Wagstaffe Bagot | Sir William Dolben | Death |
| 22 February 1768 | Tiverton | u | Charles Gore | John Duntze | Death |

### 13th Parliament (1768–1774)

| Date | Constituency | c/u | Former Incumbent | Winner | Cause |
| 18 May 1768 | New Windsor | u | Lord George Beauclerk | Richard Tonson | Death |
| 20 May 1768 | Great Bedwyn | u | Robert Brudenell | William Burke | Chose to sit for Marlborough |
| 20 May 1768 | Warwick | u | Henry Archer | Paul Methuen | Death |
| 24 May 1768 | Cockermouth | u* | Charles Jenkinson | George Johnstone | Chose to sit for Appleby |
| 27 May 1768 | Droitwich | u | Thomas Foley | Edward Foley | Chose to sit for Herefordshire |
| 27 June 1768 | Bristol | u | The Viscount Clare | The Viscount Clare | Vice-Treasurer of Ireland |
| 2 July 1768 | Ludgershall | u* | Viscount Garlies | Viscount Garlies | Commissioner of Police for Scotland |
| 5 July 1768 | Staffordshire | u* | Lord Grey | John Wrottesley | Succeeded to a peerage |
| 11 July 1768 | Tavistock | u* | Richard Rigby | Richard Rigby | Paymaster of the Forces |
| 13 November 1768 | Great Bedwyn | u* | James Brudenell | William Northey | Resignation to contest Marlborough |
| 16 November 1768 | Wareham | u | Ralph Burton | Whitshed Keene | Death |
| 16 November 1768 | Newcastle-under-Lyme | u* | John Wrottesley | George Hay | Resignation to contest Staffordshire |
| 17 November 1768 | Marlborough | u* | Robert Brudenell | James Brudenell | Death |
| 21 November 1768 | Richmond | u | Sir Lawrence Dundas | William Norton | Chose to sit for Edinburgh |
| 29 November 1768 | Peterborough | u | Sir Matthew Lamb | Viscount Belasyse | Death |
| 30 November 1768 | Tamworth | u | William de Grey | Charles Vernon | Chose to sit for Newport (Cornwall) |
| 1 December 1768 | Coventry | u | Andrew Archer | Sir Richard Glyn | Succeeded to a peerage |
| 5 December 1768 | Pontefract | c | The Viscount Galway | The Viscount Galway | Void Election |
| 5 December 1768 | Pontefract | c | Sir Rowland Winn | Henry Strachey | Void Election |
| 9 December 1768 | Sussex | u | Thomas Pelham | Richard Harcourt | Succeeded to a peerage |
| 10 December 1768 | Glasgow Burghs | u* | Lord Frederick Campbell | Lord Frederick Campbell | Lord Clerk Register |
| 14 December 1768 | St Germans | u* | Edward Eliot | Benjamin Langlois | Chose to sit for Liskeard |
| 14 December 1768 | St Germans | u | Samuel Salt | George Jennings | Chose to sit for Liskeard |
| 14 December 1768 | Middlesex | c* | George Cooke | John Glynn | Death |
| 23 December 1768 | Wigtown Burghs | u | George Augustus Selwyn | Chauncy Townsend | Chose to sit for Gloucester |
| 28 December 1768 | Weymouth and Melcombe Regis | u* | Jeremiah Dyson | Jeremiah Dyson | Junior Lord of the Treasury |
| 29 December 1768 | Linlithgow Burghs | u | John Lockhart Ross | James Dickson | Chose to sit for Lanarkshire |
| 4 January 1769 | Cardiganshire | u* | The Viscount Lisburne | The Viscount Lisburne | Lord of Trade |
| 13 January 1769 | Cardigan Boroughs | c | Pryse Campbell | Ralph Congreve | Death |
| 8 February 1769 | Guildford | u* | Sir Fletcher Norton | Sir Fletcher Norton | Justice in Eyre, South of the Trent |
| 15 February 1769 | Kent | u | John Frederick Sackville | Sir Charles Farnaby | Succeeded to a peerage |
| 16 February 1769 | Middlesex | u* | John Wilkes | John Wilkes | Expulsion |
| 18 February 1769 | Poole | u* | Joshua Mauger | Joshua Mauger | Void Election |
| 23 February 1769 | Lymington | u | Adam Drummond | Hugo Meynell | Chose to sit for St Ives |
| 16 March 1769 | Middlesex | u | John Wilkes | John Wilkes | Expulsion (Declared Incapable of being re-elected) |
| 22 March 1769 | Cockermouth | u | Sir George Macartney | Sir James Lowther | Resignation following appointment as Chief Secretary for Ireland |
| 27 March 1769 | Chippenham | u | Sir Thomas Fludyer | Henry Dawkins | Death |
| 29 March 1769 | Warwickshire | u* | William Throckmorton Bromley | Thomas Skipwith | Death |
| 3 April 1769 | Bletchingley | u* | Sir Kenrick Clayton | Frederick Standert | Death |
| 4 April 1769 | Perth Burghs | u | William Pulteney | George Dempster | Chose to sit for Cromartyshire |
| 13 April 1769 | Middlesex | c* | John Wilkes | John Wilkes | Expulsion (Declared Incapable of being re-elected) |
| 13 April 1769 | Middlesex | c | John Wilkes | Henry Lawes Luttrell | Luttrell declared elected 15 April 1769 |
| 24 April 1769 | Bossiney | u* | Henry Lawes Luttrell | Sir George Osborn | Resignation to contest Middlesex |
| 8 May 1769 | Totnes | u | Peter Burrell | Peter Burrell | Surveyor General of the Land Revenues of the Crown |
| 15 May 1769 | Brecon | u | Charles Morgan | John Morgan | Resignation to contest Breconshire |
| 15 May 1769 | Cambridge | u* | Charles Sloane Cadogan | Charles Sloane Cadogan | Master of the Mint |
| 17 May 1769 | Breconshire | u* | Thomas Morgan | Charles Morgan | Death |
| 26 May 1769 | Richmond | u | Alexander Wedderburn | Charles John Crowle | Resignation |
| 9 June 1769 | Stirling Burghs | u | James Masterton | James Masterton | Barrack Master General for Scotland |
| 15 January 1770 | Hertford | c* | William Cowper | Paul Feilde | Death |
| 15 January 1770 | Winchelsea | u* | Thomas Orby Hunter | Arnold Nesbitt | Death |
| 16 January 1770 | Bishop's Castle | u* | William Clive | Alexander Wedderburn | Resignation |
| 17 January 1770 | Penryn | u* | Francis Basset | William Lemon | Death |
| 17 January 1770 | St Mawes | u | Edmund Nugent | Michael Byrne | Resignation |
| 20 January 1770 | Dover | c | Viscount Villiers | Sir Thomas Pym Hales | Succeeded to a peerage |
| 31 January 1770 | Lichfield | u* | Thomas Anson | George Adams | Resignation |
| 1 February 1770 | Cambridge University | u | Charles Yorke | William de Grey | Resignation (Lord Chancellor) |
| 2 February 1770 | Grantham | u | Sir John Cust | Francis Cust | Death |
| 8 February 1770 | Petersfield | u | Welbore Ellis | Welbore Ellis | Vice-Treasurer of Ireland |
| 10 February 1770 | Great Yarmouth | u* | Charles Townshend | Charles Townshend | Junior Lord of the Treasury |
| 12 February 1770 | Newport (Cornwall) | u | William de Grey | Richard Henry Alexander Bennet | Resignation to contest Cambridge University |
| 21 February 1770 | Westbury | u | Sir William Blackstone | Charles Dillon | Resignation (Puisne Justice of the King's Bench) |
| 26 February 1770 | Midhurst | u* | Charles James Fox | Charles James Fox | Lord of the Admiralty |
| 27 February 1770 | Plymouth | u | Francis Holburne Grey | Francis Holburne Grey | Naval Lord |
| 1 March 1770 | Christchurch | u | Thomas Robinson | Thomas Robinson | Vice-Chamberlain of the Household |
| 5 March 1770 | New Romney | u | Sir Edward Dering | John Morton | Resignation to provide a seat for Morton |
| 7 March 1770 | Cardiganshire | u* | The Viscount Lisburne | The Viscount Lisburne | Lord of the Admiralty |
| 20 March 1770 | Pembrokeshire | u* | Sir Richard Philipps | Hugh Owen | Void Election |
| 22 March 1770 | Roxburghshire | u* | Sir Gilbert Elliot | Sir Gilbert Elliot | Treasurer of the Navy |
| 4 April 1770 | Tamworth | u | Edward Thurlow | Edward Thurlow | Solicitor General for England and Wales |
| 12 April 1770 | Anglesey | u | Owen Meyrick | Sir Nicholas Bayly | Death |
| 12 April 1770 | Stafford | u | The Viscount Chetwynd | William Neville Hart | Death |
| 14 April 1770 | Eye | u* | The Viscount Allen | Richard Phillipson | Resignation |
| 17 April 1770 | Great Bedwyn | u | William Northey | William Northey | Lord of Trade |
| 18 April 1770 | Horsham | u* | James Grenville | James Wallace | Resignation |
| 20 April 1770 | Warwick | u | Lord Greville | Lord Greville | Lord of Trade |
| 23 April 1770 | Carmarthenshire | u* | George Rice | George Rice | Treasurer of the Chamber |
| 30 April 1770 | Westminster | u | Edwin Sandys | Sir Robert Bernard | Succeeded to a peerage |
| 30 April 1770 | New Woodstock | u | Lord Robert Spencer | Lord Robert Spencer | Lord of Trade |
| 7 May 1770 | Wigtown Burghs | u | Chauncy Townsend | William Stewart | Death |
| 21 May 1770 | Southampton | u* | Hans Stanley | Hans Stanley | Governor of the Isle of Wight |
| 23 May 1770 | Bossiney | u | Sir George Osborn | Sir George Osborn | Groom of the Bedchamber |
| 25 May 1770 | Midhurst | u | Lord Stavordale | Lord Stavordale | Resignation |
| 25 May 1770 | Milborne Port | u | Thomas Hutchings Medlycott | The Earl of Catherlough | Resignation |
| 11 July 1770 | City of London | u* | William Beckford | Richard Oliver | Death |
| 11 July 1770 | Scarborough | c | Fountayne Wentworth Osbaldeston | Sir James Pennyman | Death (Two MPs elected due to a Double Return) |
| 11 July 1770 | Scarborough | c | Fountayne Wentworth Osbaldeston | Ralph Bell | Death (Two MPs elected due to a Double Return) |
| 11 July 1770 | Scarborough | c | Sir James Pennyman | Sir James Pennyman | Pennyman Declared Elected 27 November 1770 |
| 11 July 1770 | Scarborough | c | Ralph Bell | Sir James Pennyman | Pennyman Declared Elected 27 November 1770 |
| 6 August 1770 | Gloucestershire | u* | Thomas Tracy | Sir William Guise | Death |
| 6 September 1770 | Wendover | u* | Sir Robert Darling | Joseph Bullock | Death |
| 2 October 1770 | Wiltshire | u* | Thomas Goddard | Charles Penruddocke | Death |
| 20 October 1770 | Okehampton | u | Thomas Brand | Richard FitzPatrick | Death |
| 31 October 1770 | East Looe | u | Richard Hussey | Richard Leigh | Death |
| 3 November 1770 | Ludlow | u | Edward Herbert | Thomas Herbert | Death |
| 20 November 1770 | Christchurch | u | Thomas Robinson | James Harris | Succeeded to a peerage |
| 22 November 1770 | Cambridgeshire | u* | Marquess of Granby | Sir Sampson Gideon | Death |
| 26 November 1770 | Buckingham | u* | George Grenville | James Grenville | Death |
| 26 November 1770 | New Shoreham | c | Sir Samuel Cornish | John Purling | Death |
| 26 November 1770 | New Shoreham | c | John Purling | Thomas Rumbold | By-election results reversed 17 December 1770 |
| 26 December 1770 | Weobley | u* | Henry Frederick Thynne | Bamber Gascoyne | Resignation (Joint-Postmaster General) |
| 29 January 1771 | Bere Alston | u | Sir Francis Henry Drake | Francis William Drake | Resignation (Master of the Household) |
| 29 January 1771 | Great Bedwyn | u | William Northey | Benjamin Hopkins | Death |
| 29 January 1771 | Bury St Edmunds | u* | Augustus John Hervey | Augustus John Hervey | Naval Lord |
| 30 January 1771 | New Woodstock | u* | Lord Robert Spencer | John Skynner | Resignation to contest Oxford |
| 31 January 1771 | Orkney and Shetland | u* | Thomas Dundas | Thomas Dundas | Resignation (Commissioner of Police for Scotland) |
| 31 January 1771 | Oxford | u* | George Nares | Lord Robert Spencer | Resignation (Puisne Justice of the Common Pleas) |
| 1 February 1771 | Bishop's Castle | u | Alexander Wedderburn | Alexander Wedderburn | Solicitor General for England and Wales |
| 1 February 1771 | Tamworth | u | Edward Thurlow | Edward Thurlow | Attorney General for England and Wales |
| 2 February 1771 | Castle Rising | u* | Thomas Whately | Thomas Whately | Lord of Trade |
| 4 February 1771 | Cambridge University | c* | William de Grey | Richard Croftes | Resignation (Chief Justice of the Common Pleas) |
| 11 February 1771 | Downton | u | Richard Croftes | James Hayes | Resignation to contest Cambridge University |
| 16 February 1771 | Huntingdonshire | u* | Viscount Hinchingbrooke | Viscount Hinchingbrooke | Vice-Chamberlain of the Household |
| 27 February 1771 | Haddington Burghs | c | Patrick Warrender | Patrick Warrender | King's Remembrancer in Scotland |
| 9 March 1771 | Rochester | u | William Gordon | Thomas Pye | Resignation |
| 20 March 1771 | Elgin Burghs | u | Sir Andrew Mitchell | Thomas Lockhart | Death |
| 11 May 1771 | Wootton Bassett | u* | Henry St John | Henry St John | Groom of the Bedchamber |
| 13 May 1771 | Arundel | u | Lauchlin Macleane | John Stewart | Resignation |
| 13 May 1771 | Shaftesbury | c* | Ralph Payne | Francis Sykes | Resignation (Governor of the Leeward Islands) |
| 15 May 1771 | Orford | u* | Edward Colman | Robert Seymour Conway | Resignation (Gentlemen Usher of the Privy Chamber) |
| 15 May 1771 | Salisbury | u* | Edward Bouverie | Viscount Folkestone | Resignation |
| 8 June 1771 | Castle Rising | u | Jenison Shafto | Crisp Molineux | Death |
| 15 June 1771 | Montgomery | u | Richard Clive | Frederick Cornewall | Death |
| 18 July 1771 | Monmouthshire | c* | Thomas Morgan | John Morgan | Death |
| 23 July 1771 | Lancashire | u | Lord Strange | The Viscount Molyneux | Death |
| 10 August 1771 | Plymouth | u* | Francis Holburne Grey | Sir Charles Hardy | Death |
| 20 September 1771 | Bridgnorth | u* | William Whitmore | Thomas Whitmore | Death |
| 4 October 1771 | Brackley | u* | Robert Wood | Timothy Caswall | Death |
| 22 November 1771 | Callington | c* | Fane William Sharpe | William Skrine | Death |
| 13 December 1771 | Northampton | u* | Thomas Howe | Wilbraham Tollemache | Death |
| 18 December 1771 | Suffolk | u* | Sir John Rous | Rowland Holt | Death |
| 9 January 1772 | Linlithgow Burghs | u* | James Dickson | Sir James Cockburn | Death |
| 27 January 1772 | Lyme Regis | u* | Lord Burghersh | Henry Fane | Succeeded to a peerage |
| 27 January 1772 | Wallingford | c* | John Cator | John Cator | Warden of the Mint |
| 31 January 1772 | Brecon | u* | John Morgan | Charles Van | Resignation to contest Monmouthshire |
| 31 January 1772 | Derby | c* | William Fitzherbert | Wenman Coke | Death |
| 3 February 1772 | Castle Rising | u | Thomas Whately | Thomas Whately | Surveyor of the King's Private Roads |
| 4 February 1772 | Lancashire | u* | Lord Archibald Hamilton | Sir Thomas Egerton | Resignation |
| 5 February 1772 | Hampshire | u* | Lord Henley | Sir Henry St John | Succeeded to a peerage |
| 12 February 1772 | Weobley | u | Bamber Gascoyne | Bamber Gascoyne | Lord of Trade |
| 15 February 1772 | Petersfield | u* | William Jolliffe | William Jolliffe | Lord of Trade |
| 20 February 1772 | Argyllshire | u* | Robert Campbell | Adam Livingston | Resignation (Receiver and Cashier of Customs in Scotland) |
| 25 February 1772 | Essex | u* | Sir William Maynard | John Conyers | Death |
| 28 February 1772 | Dysart Burghs | u | James Townsend Oswald | James Townsend Oswald | Secretary for the Leeward Islands |
| 5 March 1772 | Shropshire | u | Sir John Astley | Sir Watkin Williams Wynn | Death |
| 9 March 1772 | Montgomeryshire | u | Edward Kynaston | Watkin Williams | Death |
| 7 April 1772 | Milborne Port | c | The Earl of Catherlough | Richard Combe | Death |
| 7 April 1772 | Milborne Port | c | Richard Combe | George Prescott | By-election results reversed on petition 22 May 1772 |
| 9 April 1772 | East Looe | u | Richard Leigh | John Purling | Death |
| 10 April 1772 | New Woodstock | u* | John Skynner | John Skynner | Puisne Justice of Chester |
| 5 May 1772 | Stockbridge | u | Richard Worge | James Hare | Death |
| 9 May 1772 | Saltash | c(*) | Thomas Bradshaw | John Williams | Lord of the Admiralty |
| 9 May 1772 | Saltash | c(*) | John Williams | Thomas Bradshaw | By-election results reversed on petition 8 June 1772 |
| 18 May 1772 | Aldborough | u | Andrew Wilkinson | Earl of Lincoln | Resignation |
| 22 May 1772 | Beverley | c | Hugh Bethell | Sir Griffith Boynton | Death |
| 10 June 1772 | Castle Rising | u | Thomas Whately | Lord Guernsey | Death |
| 15 June 1772 | Lyme Regis | u* | Henry Fane | Henry Fane | Surveyor of the King's Private Roads |
| 27 July 1772 | Boroughbridge | u | James West | Henry Clinton | Death |
| 28 July 1772 | Scarborough | u* | George Manners | The Earl of Tyrconnel | Death |
| 7 August 1772 | Harwich | u* | John Roberts | Charles Jenkinson | Death |
| 21 August 1772 | Wiltshire | c* | Edward Popham | Ambrose Goddard | Death |
| 18 September 1772 | Rochester | c* | John Calcraft | George Finch Hatton | Death |
| 9 November 1772 | New Windsor | u* | Richard Tonson | John Hussey Montagu | Death |
| 4 December 1772 | Reigate | u | Sir Charles Cocks | Sir Charles Cocks | Clerk of the Ordnance |
| 4 December 1772 | St Mawes | u | Michael Byrne | James Edward Colleton | Death |
| 5 December 1772 | Ludgershall | u | Viscount Garlies | Viscount Garlies | Lord of Trade |
| 5 December 1772 | St Germans | u* | Benjamin Langlois | Benjamin Langlois | Clerk of the Deliveries of the Ordnance |
| 7 December 1772 | Wilton | u* | Henry Herbert | Henry Herbert | Resignation to contest Wiltshire |
| 11 December 1772 | Pontefract | u | The Viscount Galway | The Viscount Galway | Death |
| 16 December 1772 | Cornwall | c | Sir John St Aubyn | Humphrey Mackworth Praed | Death |
| 28 December 1772 | Harwich | u | Charles Jenkinson | Charles Jenkinson | Vice-Treasurer of Ireland |
| 28 December 1772 | Penryn | u | William Lemon | William Lemon | Resignation to contest Cornwall |
| 30 December 1772 | Berkshire | u* | Edward Kynaston | John Elwes | Death |
| 1 January 1773 | Appleby | u | Charles Jenkinson | Fletcher Norton | Resignation to contest Harwich |
| 1 January 1773 | Midhurst | u | Charles James Fox | Charles James Fox | Junior Lord of the Treasury |
| 14 January 1773 | Northamptonshire | u* | Sir Edmund Isham | Lucy Knightley | Death |
| 25 January 1773 | Coventry | u* | Sir Richard Glyn | Walter Waring | Death |
| 2 April 1773 | Dover | c | Sir Thomas Pym Hales | Thomas Barret | Death |
| 14 April 1773 | Newport (I.o.W.) | u | John Eames | John St John | Resignation (Commissioner of Taxes) |
| 16 April 1773 | Clitheroe | u* | Nathaniel Lister | Thomas Lister | Resignation |
| 26 April 1773 | Tain Burghs | u* | Alexander Mackay | James Grant | Resignation |
| 13 May 1773 | Aldeburgh | u* | Nicholas Linwood | Thomas Fonnereau | Death |
| 11 June 1773 | Perthshire | c* | David Graeme | James Murray | Resignation |
| 15 September 1773 | Lancaster | u* | Francis Reynolds | Lord Richard Cavendish | Death |
| 25 November 1773 | Worcester | c | Henry Crabb Boulton | Thomas Bates Rous | Death (Election Voided 8 February 1774) |
| 15 December 1773 | Maldon | c | John Huske | Charles Rainsford | Death |
| 23 December 1773 | City of London | c* | Sir Robert Ladbroke | Frederick Bull | Death |
| 20 January 1774 | Newcastle-under-Lyme | u* | Sir George Hay | Sir George Hay | Judge of the High Court of the Admiralty |
| 21 January 1774 | Warwick | u* | Lord Greville | Charles Francis Greville | Succeeded to a peerage |
| 22 January 1774 | Ludgershall | u | Viscount Garlies | Whitshed Keene | Became a Scottish Peer |
| 28 January 1774 | Wareham | u | Whitshed Keene | Thomas de Grey | Lord of Trade |
| 16 February 1774 | Peterborough | u* | Viscount Belasyse | Richard Benyon | Succeeded to a peerage |
| 24 February 1774 | Merioneth | u* | John Pugh Pryse | Evan Lloyd Vaughan | Death |
| 28 February 1774 | Huntingdon | u* | Robert Jones | William Augustus Montagu | Death |
| 1 March 1774 | Worcester | c | Thomas Bates Rous | Nicholas Lechmere | Void Election |
| 14 March 1774 | Weymouth and Melcombe Regis | u | Jeremiah Dyson | Jeremiah Dyson | Cofferer of the Household |
| 15 March 1774 | Orford | u* | Viscount Beauchamp | Viscount Beauchamp | Junior Lord of the Treasury |
| 19 March 1774 | Liverpool | u* | Sir William Meredith | Sir William Meredith | Comptroller of the Household |
| 21 March 1774 | Grampound | u | Charles Wolfran Cornwall | Charles Wolfran Cornwall | Junior Lord of the Treasury |
| 22 March 1774 | Eye | u | William Cornwallis | Marquess of Carmarthen | Resignation |
| 28 March 1774 | Pontefract | u | The Viscount Galway | Robert Monckton | Death |
| 29 March 1774 | Portsmouth | c* | Sir Matthew Fetherstonhaugh | Peter Taylor | Death |
| 7 April 1774 | Droitwich | u* | Robert Harley | Andrew Foley | Death |
| 11 May 1774 | Haslemere | u* | William Burrell | Sir Merrick Burrell | Resignation (Commissioner of Excise) |
| 31 May 1774 | Worcestershire | u* | John Ward | Edward Foley | Succeeded to a peerage |
| 31 May 1774 | Droitwich | u | Edward Foley | Rowland Berkeley | Resignation to contest Worcestershire |
| 13 August 1774 | Winchelsea | u* | The Earl of Thomond | William Nedham | Death |
| 6 September 1774 | Thetford | u | John Drummond | Viscount Petersham | Death |