# List of United Kingdom by-elections (1847–1857)

This is a list of parliamentary by-elections in the United Kingdom held between 1847 and 1857, with the names of the previous incumbent and the victor in the by-election and their respective parties. Where seats changed political party at the election, the result is highlighted: light blue for a Conservative gain, orange for a Whig (including their Peelite allies) gain, green for Irish Repeal gain and grey for any other gain.

## Resignations

    See Resignation from the British House of Commons for more details.
Where the cause of by-election is given as "resignation" or "seeks re-election", this indicates that the incumbent was appointed on his own request to an "office of profit under the Crown", either the Steward of the Chiltern Hundreds, the Steward of the Manor of Northstead or the Steward of the Manor of Hempholme. These appointments are made as a constitutional device for leaving the House of Commons, whose Members are not permitted to resign.

## By-elections

16th Parliament (1852–1857) :
| By-election | Date | Former incumbent | Party | Party | Winner | Party | Party | Cause |
| Tipperary | 16 March 1857 | James Sadleir | | Independent Irish | Daniel O'Donoghue | | Independent Irish | Expulsion (Absconded to avoid charges for fraud) |
| County Londonderry | 9 March 1857 | Thomas Bateson | | Conservative | James Johnston Clark | | Conservative | Resignation |
| East Sussex | 7 March 1857 | Charles Frewen | | Conservative | Viscount Pevensey | | Conservative | Resignation (intended to contest North Leicestershire) |
| Glasgow | 6 March 1857 | John MacGregor | | Whig | Walter Buchanan | | Whig | Resignation |
| North Leicestershire | 2 March 1857 | Marquess of Granby | | Conservative | Lord John Manners | | Conservative | Succession to a peerage |
| Colchester | 24 February 1857 | Lord John Manners | | Conservative | John Gurdon Rebow | | Whig | Resignation in order to contest North Leicestershire |
| County Limerick | 17 February 1857 | William Monsell | | Whig | William Monsell | | Whig | President of the Board of Health |
| Clonmel | 17 February 1857 | John O'Connell | | Whig | John Bagwell | | Whig | Resignation (Clerk of the Crown and Hanaper in Ireland) |
| West Kent | 16 February 1857 | Sir Edmund Filmer | | Conservative | Charles Wykeham Martin | | Whig | Death |
| Hereford | 14 February 1857 | Sir Robert Price | | Whig | George Clive | | Whig | Resignation |
| Bandon | 14 February 1857 | Viscount Bernard | | Conservative | William Smyth Bernard | | Conservative | Succession to an Irish peerage |
| Dumfriesshire | 12 February 1857 | Viscount Drumlanrig | | Conservative | John Hope-Johnstone | | Conservative | Succession to a Scottish peerage |
| Downpatrick | 12 February 1857 | Charles Hardinge | | Conservative | Richard Ker | | Conservative | Succession to a peerage |
| Buteshire | 12 February 1857 | James Stuart-Wortley | | Peelite | James Stuart-Wortley | | Peelite | Solicitor General for England and Wales |
| Southampton | 11 February 1857 | Alexander Cockburn | | Whig | Thomas Matthias Weguelin | | Whig | Resignation (Chief Justice of the Common Pleas) |
| Newport (I.O.W.) | 11 February 1857 | William Biggs | | Whig | Robert Kennard | | Conservative | Resignation |
| Kingston upon Hull | 11 February 1857 | William Henry Watson | | Whig | James Clay | | Whig | Resignation (Baron of the Court of Exchequer) |
| Hertford | 9 February 1857 | William Cowper | | Whig | William Cowper | | Whig | Vice-President of the Committee of the Council on Education |
| Greenwich | 9 February 1857 | Peter Rolt | | Conservative | William Codrington | | Whig | Resignation |
| Aylesbury | 9 February 1857 | Richard Bethell | | Whig | Richard Bethell | | Whig | Attorney General for England and Wales |
| Salford | 2 February 1857 | Joseph Brotherton | | Whig | Edward Ryley Langworthy | | Ind. Whig | Death |
| Lanarkshire | 9 January 1857 | William Lockhart | | Conservative | Alexander Baillie-Cochrane | | Conservative | Death |
| East Suffolk | 26 December 1856 | Sir Edward Gooch | | Conservative | The Lord Henniker | | Conservative | Death |
| Kerry | 9 August 1856 | Viscount Castlerosse | | Whig | Viscount Castlerosse | | Whig | Comptroller of the Household |
| Nottingham | 30 July 1856 | Edward Strutt | | Whig | Charles Paget | | Whig | Resignation and elevation to the peerage |
| Dorset | 26 July 1856 | George Bankes | | Conservative | Henry Sturt | | Conservative | Death |
| Frome | 23 July 1856 | Viscount Dungarvan | | Whig | William George Boyle | | Whig | Succession to a peerage |
| Dorchester | 22 July 1856 | Henry Sturt | | Conservative | Charles Napier Sturt | | Conservative | Resignation in order to contest Dorset |
| Calne | 9 July 1856 | Earl of Shelburne | | Whig | Sir William Fenwick Williams | | Whig | Resignation and elevation to the House of Lords through a Writ of acceleration |
| Leicester | 18 June 1856 | Richard Gardner | | Whig | John Biggs | | Whig | Death |
| Lichfield | 30 May 1856 | The Lord Waterpark | | Whig | Viscount Sandon | | Ind. Whig | Resignation |
| Longford | 13 May 1856 | Richard Maxwell Fox | | Whig | Henry George Hughes | | Whig | Death |
| Cheltenham | 8 May 1856 | Grenville Berkeley | | Whig | Francis Berkeley | | Whig | Resignation |
| Athlone | 14 April 1856 | William Keogh | | Whig | Henry Handcock | | Conservative | Resignation (Judge of the Court of Common Pleas) |
| Chippenham | 9 April 1856 | Joseph Neeld | | Conservative | Robert Parry Nisbet | | Conservative | Death |
| Ennis | 8 April 1856 | John David FitzGerald | | Whig | John David FitzGerald | | Whig | Attorney-General for Ireland |
| Boston | 7 March 1856 | Gilbert Heathcote | | Whig | Herbert Ingram | | Whig | Resignation in order to contest Rutlandshire |
| Rutlandshire | 4 March 1856 | Sir Gilbert Heathcote | | Whig | Gilbert Heathcote | | Whig | Resignation and elevation to the peerage |
| Leominster | 19 February 1856 | George Arkwright | | Conservative | Gathorne Hardy | | Conservative | Death |
| New Ross | 18 February 1856 | Charles Gavan Duffy | | Independent Irish | Charles Tottenham | | Conservative | Resignation |
| Cambridge University | 11 February 1856 | Henry Goulburn | | Conservative | Spencer Horatio Walpole | | Conservative | Death |
| Wigtownshire | 9 February 1856 | Viscount Dalrymple | | Whig | Sir Andrew Agnew | | Whig | Resignation |
| Edinburgh | 9 February 1856 | Thomas Babington Macaulay | | Whig | Adam Black | | Whig | Resignation |
| Sligo Borough | 8 February 1856 | John Sadleir | | Whig | John Arthur Wynne | | Conservative | Death |
| Rochester | 8 February 1856 | Francis Child Villiers | | Conservative | Philip Wykeham Martin | | Whig | Resignation |
| Tamworth | 7 February 1856 | John Townshend | | Whig | Viscount Raynham | | Whig | Succession to a peerage |
| Midhurst | 7 February 1856 | Spencer Horatio Walpole | | Conservative | Samuel Warren | | Conservative | Resignation in order to contest Cambridge University |
| Leeds | 6 February 1856 | Matthew Talbot Baines | | Whig | Matthew Talbot Baines | | Whig | Chancellor of the Duchy of Lancaster |
| Taunton | 5 February 1856 | Henry Labouchere | | Whig | Henry Labouchere | | Whig | Secretary of State for the Colonies |
| Newcastle upon Tyne | 5 February 1856 | John Fenwick Burgoyne Blackett | | Whig | George Ridley | | Whig | Resignation |
| Lincoln | 16 January 1856 | Charles Delaet Waldo Sibthorp | | Conservative | Gervaise Tottenham Waldo Sibthorp | | Conservative | Death |
| Meath | 17 December 1855 | Frederick Lucas | | Independent Irish | Edward McEvoy | | Independent Irish | Death |
| Armagh City | 6 December 1855 | Ross Stephenson Moore | | Conservative | Joshua Bond | | Conservative | Death |
| Wells | 21 November 1855 | Robert Charles Tudway | | Conservative | Hedworth Hylton Jolliffe | | Conservative | Death |
| Southwark | 20 November 1855 | Sir William Molesworth | | Radical | Charles Napier | | Whig | Death |
| Totnes | 5 November 1855 | Lord Seymour | | Whig | Earl of Gifford | | Whig | Succession to a peerage |
| Huntingdonshire | 23 October 1855 | Viscount Mandeville | | Conservative | James Rust | | Conservative | Succession to a peerage |
| Kilmarnock Burghs | 16 August 1855 | Edward Pleydell-Bouverie | | Whig | Edward Pleydell-Bouverie | | Whig | President of the Poor Law Board |
| Kidderminster | 14 August 1855 | Robert Lowe | | Whig | Robert Lowe | | Whig | Vice-President of the Board of Trade and Paymaster General |
| Hertford | 14 August 1855 | William Cowper | | Whig | William Cowper | | Whig | President of the Board of Health |
| Marylebone | 28 July 1855 | Sir Benjamin Hall | | Peelite | Sir Benjamin Hall | | Peelite | First Commissioner of Works |
| Southwark | 27 July 1855 | Sir William Molesworth | | Radical | Sir William Molesworth | | Radical | Secretary of State for the Colonies |
| East Norfolk | 17 July 1855 | Edmond Wodehouse | | Conservative | Sir Henry Stracey | | Conservative | Resignation |
| Cheltenham | 14 July 1855 | Craven Berkeley | | Whig | Grenville Berkeley | | Whig | Death |
| Evesham | 11 July 1855 | Grenville Berkeley | | Whig | Edward Holland | | Whig | Resignation in order to contest Cheltenham |
| Bath | 5 June 1855 | Thomas Phinn | | Whig | William Tite | | Whig | Resignation |
| Renfrewshire | 14 May 1855 | William Mure | | Conservative | Sir Michael Shaw-Stewart | | Conservative | Resignation |
| County Cork | 23 April 1855 | Edmond Roach | | Whig | Rickard Deasy | | Whig | Resignation and elevation to the Irish peerage |
| Cavan | 13 April 1855 | Sir John Young | | Peelite | Robert Burrowes | | Conservative | Resignation (Lord High Commissioner of the Ionian Islands) |
| Kilmarnock Burghs | 7 April 1855 | Edward Pleydell-Bouverie | | Whig | Edward Pleydell-Bouverie | | Whig | Vice-President of the Board of Trade and Paymaster General |
| Lewes | 5 April 1855 | Henry Brand | | Whig | Henry Brand | | Whig | Junior Lord of the Treasury |
| Gloucester | 31 March 1855 | William Philip Price | | Whig | William Philip Price | | Whig | Seeks re-election after his firm was granted a contract to supply huts to the army in the Crimea |
| Liverpool | 29 March 1855 | Henry Thomas Liddell | | Conservative | Joseph Christopher Ewart | | Whig | Succession to a peerage |
| Wilton | 28 March 1855 | Charles A'Court | | Whig | Edmund Antrobus | | Whig | Resignation (Special Commissioner of Property and Income Tax) |
| Tamworth | 14 March 1855 | Sir Robert Peel | | Peelite | Sir Robert Peel | | Peelite | Civil Lord of the Admiralty |
| Portsmouth | 14 March 1855 | The Viscount Monck | | Whig | The Viscount Monck | | Whig | Junior Lord of the Treasury |
| Forfarshire | 10 March 1855 | Viscount Duncan | | Whig | Viscount Duncan | | Whig | Junior Lord of the Treasury |
| Barnstaple | 10 March 1855 | John Laurie | | Conservative | George Buck | | Conservative | Void By-Election |
| Montrose Burghs | 9 March 1855 | Joseph Hume | | Whig | William Edward Baxter | | Whig | Death |
| Ennis | 8 March 1855 | John David FitzGerald | | Independent Irish | John David FitzGerald | | Whig | Solicitor-General for Ireland |
| Dudley | 8 March 1855 | John Benbow | | Conservative | Sir Stafford Northcote | | Conservative | Death |
| Athlone | 7 March 1855 | William Keogh | | Whig | William Keogh | | Whig | Attorney-General for Ireland |
| Stroud | 6 March 1855 | Edward Horsman | | Whig | Edward Horsman | | Whig | Chief Secretary for Ireland |
| Stirlingshire | 5 March 1855 | William Forbes | | Conservative | Peter Blackburn | | Conservative | Death |
| Radnor Boroughs | 5 March 1855 | George Cornewall Lewis | | Whig | George Cornewall Lewis | | Whig | Chancellor of the Exchequer |
| Northampton | 5 March 1855 | Robert Vernon Smith | | Whig | Robert Vernon Smith | | Whig | President of the Board of Control |
| Halifax | 3 March 1855 | Sir Charles Wood | | Whig | Sir Charles Wood | | Whig | First Lord of the Admiralty |
| City of London | 3 March 1855 | Lord John Russell | | Whig | Lord John Russell | | Whig | Secretary of State for the Colonies |
| Swansea District | 27 February 1855 | John Henry Vivian | | Whig | Lewis Llewelyn Dillwyn | | Whig | Death |
| Cardigan Boroughs | 24 February 1855 | Pryse Loveden | | Whig | John Lloyd Davies | | Conservative | Death |
| South Wiltshire | 15 February 1855 | Sidney Herbert | | Peelite | Sidney Herbert | | Peelite | Secretary of State for the Colonies |
| Windsor | 14 February 1855 | Lord Charles Wellesley | | Conservative | Samson Ricardo | | Whig | Resignation |
| Tiverton | 12 February 1855 | The Viscount Palmerston | | Whig | The Viscount Palmerston | | Whig | Prime Minister and First Lord of the Treasury |
| Radnor Boroughs | 8 February 1855 | Sir Thomas Frankland Lewis | | Whig | George Cornewall Lewis | | Whig | Death |
| Sunderland | 2 January 1855 | William Digby Seymour | | Whig | Henry Fenwick | | Whig | Recorder of Newcastle |
| Ayrshire | 30 December 1854 | James Hunter Blair | | Conservative | Sir James Fergusson | | Conservative | Death |
| Norwich | 29 December 1854 | Samuel Morton Peto | | Whig | Samuel Bignold | | Conservative | Resignation |
| Fermanagh | 29 December 1854 | Sir Arthur Brooke | | Conservative | Henry Cole | | Conservative | Death |
| Antrim | 27 December 1854 | Edward William Pakenham | | Conservative | Thomas Henry Pakenham | | Conservative | Death |
| County Limerick | 26 December 1854 | Wyndham Goold | | Whig | Stephen de Vere | | Whig | Death |
| Marylebone | 20 December 1854 | Lord Dudley Stuart | | Whig | Viscount Ebrington | | Whig | Death |
| East Gloucestershire | 19 December 1854 | Sir Michael Hicks Beach | | Conservative | Robert Stayner Holford | | Conservative | Death |
| Abingdon | 13 December 1854 | Lord Norreys | | Whig | Joseph Haythorne Reed | | Whig | Succession to a peerage |
| Bedford | 6 December 1854 | Henry Stuart | | Conservative | William Stuart | | Conservative | Death |
| Coventry | 2 December 1854 | Charles Geach | | Whig | Joseph Paxton | | Whig | Death |
| Limerick City | 28 October 1854 | Robert Potter | | Independent Irish | James O'Brien | | Whig | Death |
| Frome | 24 October 1854 | Robert Edward Boyle | | Whig | Viscount Dungarvan | | Whig | Death |
| Forfarshire | 11 October 1854 | Lauderdale Maule | | Whig | Viscount Duncan | | Whig | Death |
| Wigan | 3 October 1854 | Ralph Anthony Thicknesse | | Whig | Joseph Acton | | Whig | Death |
| King's Lynn | 16 September 1854 | Viscount Jocelyn | | Conservative | John Henry Gurney | | Whig | Death |
| Barnstaple | 25 August 1854 | Richard Bremridge | | Conservative | John Laurie | | Conservative | Void election |
| Barnstaple | 25 August 1854 | Sir William Fraser | | Conservative | Richard Samuel Guinness | | Conservative | Void election |
| Aberdeenshire | 22 August 1854 | William Gordon | | Conservative | Lord Haddo | | Whig | Resignation |
| Kingston upon Hull | 18 August 1854 | Viscount Goderich | | Whig | William Henry Watson | | Whig | Void election |
| Kingston upon Hull | 18 August 1854 | James Clay | | Whig | William Digby Seymour | | Whig | Void election |
| Canterbury | 18 August 1854 | Henry Plumptre Gipps | | Conservative | Charles Manners Lushington | | Conservative | Void election |
| Canterbury | 18 August 1854 | Henry Butler-Johnstone | | Conservative | Sir William Somerville | | Whig | Void election |
| Cambridge | 18 August 1854 | Kenneth Macaulay | | Conservative | Robert Adair | | Whig | Void election |
| Cambridge | 18 August 1854 | John Harvey Astell | | Conservative | Francis Mowatt | | Whig | Void election |
| Maldon | 17 August 1854 | Charles Du Cane | | Conservative | George Sandford | | Conservative | Void election |
| Maldon | 17 August 1854 | Taverner John Miller | | Conservative | John Bramley-Moore | | Conservative | Void election |
| Marylebone | 16 August 1854 | Sir Benjamin Hall | | Whig | Sir Benjamin Hall | | Whig | President of the Board of Health |
| Cockermouth | 9 August 1854 | Henry Aglionby Aglionby | | Whig | John Steel | | Whig | Death |
| Beverley | 31 July 1854 | Francis Charles Lawley | | Whig | Arthur Hamilton-Gordon | | Whig | Resignation |
| Morpeth | 17 June 1854 | Sir George Grey | | Whig | Sir George Grey | | Whig | Secretary of State for the Colonies |
| City of London | 14 June 1854 | Lord John Russell | | Whig | Lord John Russell | | Whig | Lord President of the Council |
| Hertfordshire | 24 May 1854 | Thomas Plumer Halsey | | Conservative | Abel Smith, Jnr | | Conservative | Death |
| Devonport | 11 May 1854 | Henry Tufnell | | Whig | Thomas Erskine Perry | | Whig | Resignation |
| Hastings | 10 May 1854 | Musgrave Brisco | | Conservative | Frederick North | | Whig | Resignation |
| Lichfield | 9 May 1854 | Viscount Anson | | Whig | The Lord Waterpark | | Whig | Succession to a peerage |
| Flintshire | 8 May 1854 | Edward Lloyd-Mostyn | | Whig | Thomas Lloyd-Mostyn | | Whig | Succession to a peerage |
| Southampton | 12 April 1854 | Alexander Cockburn | | Whig | Alexander Cockburn | | Whig | Recorder of Bristol |
| North Durham | 1 April 1854 | Viscount Seaham | | Conservative | Lord Adolphus Vane-Tempest | | Conservative | Succession to a peerage |
| Westmorland | 31 March 1854 | William Thompson | | Conservative | Earl of Bective | | Conservative | Death |
| Tynemouth and North Shields | 30 March 1854 | Hugh Taylor | | Conservative | William Schaw Lindsay | | Whig | Void election |
| Liskeard | 29 March 1854 | Richard Budden Crowder | | Whig | Ralph William Grey | | Whig | Resignation (Judge of the Court of Common Pleas) |
| Louth | 27 February 1854 | Chichester Fortescue | | Whig | Chichester Fortescue | | Whig | Junior Lord of the Treasury |
| Cardiganshire | 22 February 1854 | William Edward Powell | | Conservative | The Earl of Lisburne | | Conservative | Resignation |
| South Devon | 14 February 1854 | Sir Ralph Lopes | | Conservative | Lawrence Palk | | Conservative | Death |
| West Sussex | 13 February 1854 | Richard Prime | | Conservative | Henry Wyndham | | Conservative | Resignation |
| South Staffordshire | 8 February 1854 | Viscount Lewisham | | Conservative | Lord Paget | | Whig | Succession to a peerage |
| South Shropshire | 8 February 1854 | Robert Clive | | Conservative | Robert Windsor-Clive | | Conservative | Death |
| Oxford University | 7 February 1854 | Robert Inglis | | Conservative | Sir William Heathcote, | | Conservative | Resignation |
| Ludlow | 7 February 1854 | Robert Windsor-Clive | | Conservative | Percy Egerton Herbert | | Conservative | Resignation in order to contest South Shropshire |
| Brecon | 6 February 1854 | Charles Rodney Morgan | | Conservative | John Lloyd Vaughan Watkins | | Whig | Death |
| East Gloucestershire | 9 January 1854 | Marquess of Worcester | | Conservative | Sir Michael Hicks Beach | | Conservative | Succession to a peerage |
| Clonmel | 21 December 1853 | Cecil Lawless | | Independent Irish | John O'Connell | | Whig | Death |
| South Warwickshire | 3 December 1853 | Lord Brooke | | Whig | Evelyn Shirley | | Whig | Succession to a peerage |
| Salisbury | 15 November 1853 | Charles Baring Wall | | Whig | Edward Pery Buckley | | Whig | Death |
| Lisburn | 14 October 1853 | Roger Johnson Smyth | | Peelite | Jonathan Joseph Richardson | | Whig | Death |
| Dungarvan | 26 August 1853 | John Francis Maguire | | Independent Irish | John Francis Maguire | | Independent Irish | Seeks re-election upon becoming Mayor of Cork |
| Clitheroe | 23 August 1853 | John Thomas Walshman Aspinall | | Conservative | Le Gendre Starkie | | Whig | Void By-Election |
| Stamford | 22 August 1853 | John Charles Herries | | Conservative | Lord Robert Cecil | | Conservative | Resignation |
| Cork City | 20 August 1853 | Francis Murphy | | Whig | Francis Beamish | | Whig | Resignation (Commissioner for the Relief of Insolvent Debtors in England) |
| South Staffordshire | 15 August 1853 | George Anson | | Whig | Edward Littleton | | Whig | Resignation |
| North Derbyshire | 22 July 1853 | William Evans | | Whig | William Pole Thornhill | | Ind. Whig | Resignation |
| West Cornwall | 18 July 1853 | Edward Wynne-Pendarves | | Whig | Michael Williams | | Whig | Death |
| Liverpool | 9 July 1853 | Charles Turner | | Conservative | Thomas Horsfall | | Conservative | Void election |
| Liverpool | 9 July 1853 | William Forbes Mackenzie | | Conservative | Henry Liddell | | Conservative | Void election |
| Sligo Borough | 8 July 1853 | Charles Towneley | | Independent Irish | John Sadleir | | Whig | Void election |
| Tralee | 4 July 1853 | Maurice O'Connell | | Whig | Daniel O'Connell Jnr | | Whig | Death |
| Clare | 4 July 1853 | John Forster FitzGerald | | Whig | John Forster FitzGerald | | Whig | Void election |
| Clare | 4 July 1853 | Cornelius O'Brien | | Independent Irish | Cornelius O'Brien | | Independent Irish | Void election |
| Stroud | 28 June 1853 | Lord Moreton | | Whig | Edward Horsman | | Whig | Succession to a peerage |
| Peterborough | 25 June 1853 | George Hammond Whalley | | Whig | George Hammond Whalley | | Whig | Void By-Election |
| Peterborough | 25 June 1853 | George Hammond Whalley | | Whig | Thomson Hankey | | Whig | By-election result reversed on petition |
| Edinburghshire | 25 June 1853 | John Hope | | Conservative | Earl of Dalkeith | | Conservative | Void election |
| City Durham | 25 June 1853 | Lord Adolphus Vane | | Conservative | John Mowbray | | Conservative | Void By-Election |
| Chatham | 23 June 1853 | John Mark Frederick Smith | | Conservative | Leicester Viney Vernon | | Conservative | Void election |
| Harwich | 21 June 1853 | George Sandford | | Conservative | John Bagshaw | | Whig | Void election |
| Plymouth | 2 June 1853 | Charles John Mare | | Conservative | Roundell Palmer | | Conservative | Void election |
| Clitheroe | 28 May 1853 | Mathew Wilson | | Whig | John Thomas Walshman Aspinall | | Conservative | Void election |
| Rye | 23 May 1853 | William Alexander Mackinnon (younger) | | Whig | William Alexander Mackinnon (elder) | | Whig | Void election |
| Maidstone | 16 May 1853 | George Dodd | | Conservative | William Lee | | Whig | Void election |
| Berwick-upon-Tweed | 14 May 1853 | John Stapleton | | Whig | Dudley Marjoribanks | | Whig | Void election |
| Berwick-upon-Tweed | 14 May 1853 | Matthew Forster | | Whig | John Forster | | Whig | Void election |
| Taunton | 4 May 1853 | Arthur Mills | | Conservative | Sir John Ramsden | | Whig | Void election |
| County Carlow | 25 April 1853 | Henry Bruen | | Conservative | William McClintock-Bunbury | | Conservative | Death |
| Athlone | 23 April 1853 | William Keogh | | Independent Irish | William Keogh | | Whig | Solicitor-General for Ireland |
| Huddersfield | 22 April 1853 | William Rookes Crompton Stansfield | | Whig | Viscount Goderich | | Whig | Void election |
| Lancaster | 12 April 1853 | Robert Baynes Armstrong | | Whig | Thomas Greene | | Conservative | Void election |
| Blackburn | 24 March 1853 | William Eccles | | Whig | Montague Joseph Feilden | | Whig | Void election |
| Bridgnorth | 22 March 1853 | Sir Robert Pigot | | Conservative | John Pritchard | | Conservative | Void election |
| Frome | 7 March 1853 | Robert Edward Boyle | | Whig | Robert Edward Boyle | | Whig | Void election |
| West Worcestershire | 28 February 1853 | Henry Lygon | | Conservative | Viscount Elmley | | Conservative | Succession to a peerage |
| Forfarshire | 25 February 1853 | Lauderdale Maule | | Whig | Lauderdale Maule | | Whig | Surveyor-General of the Ordnance |
| Oxford University | 20 January 1853 | William Ewart Gladstone | | Peelite | William Ewart Gladstone | | Peelite | Chancellor of the Exchequer |
| Carlow Borough | 20 January 1853 | John Sadleir | | Independent Irish | John Alexander | | Conservative | Junior Lord of the Treasury |
| County Limerick | 12 January 1853 | William Monsell | | Whig | William Monsell | | Whig | Clerk of the Ordnance |
| Dumfriesshire | 12 January 1853 | Viscount Drumlanrig | | Peelite | Viscount Drumlanrig | | Peelite | Comptroller of the Household |
| South Wiltshire | 11 January 1853 | Sidney Herbert | | Peelite | Sidney Herbert | | Peelite | Secretary at War |
| Haddingtonshire | 11 January 1853 | Lord Elcho | | Peelite | Lord Elcho | | Peelite | Junior Lord of the Treasury |
| Cavan | 10 January 1853 | Sir John Young | | Peelite | Sir John Young | | Peelite | Chief Secretary for Ireland |
| Southampton | 7 January 1853 | Sir Alexander Cockburn | | Whig | Sir Alexander Cockburn | | Whig | Attorney General for England and Wales |
| Aylesbury | 6 January 1853 | Richard Bethell | | Whig | Richard Bethell | | Whig | Solicitor General for England and Wales |
| Lichfield | 5 January 1853 | Lord Alfred Paget | | Whig | Lord Alfred Paget | | Whig | Chief Equerry and Clerk Marshal |
| Halifax | 5 January 1853 | Charles Wood | | Whig | Charles Wood | | Whig | President of the Board of Control |
| Wolverhampton | 4 January 1853 | Charles Pelham Villiers | | Whig | Charles Pelham Villiers | | Whig | Judge Advocate General |
| Oxford | 4 January 1853 | William Wood | | Whig | Edward Cardwell | | Peelite | Resignation (Vice Chancellor of the High Court) |
| Marlborough | 4 January 1853 | Lord Ernest Bruce | | Peelite | Lord Ernest Bruce | | Peelite | Vice-Chamberlain of the Household |
| Leith Burghs | 4 January 1853 | James Moncreiff | | Whig | James Moncreiff | | Whig | Lord Advocate |
| Gloucester | 4 January 1853 | Maurice Berkeley | | Whig | Maurice Berkeley | | Whig | Second Sea Lord |
| Brighton | 4 January 1853 | Lord Alfred Hervey | | Peelite | Lord Alfred Hervey | | Peelite | Junior Lord of the Treasury |
| Tiverton | 3 January 1853 | The Viscount Palmerston | | Whig | The Viscount Palmerston | | Whig | Home Secretary |
| Carlisle | 3 January 1853 | Matthew Talbot Baines | | Whig | Matthew Talbot Baines | | Whig | President of the Poor Law Board |
| City of London | 3 January 1853 | Lord John Russell | | Whig | Lord John Russell | | Whig | Foreign Secretary |
| Scarborough | 1 January 1853 | Earl of Mulgrave | | Whig | Earl of Mulgrave | | Whig | Treasurer of the Household |
| Nottingham | 1 January 1853 | Edward Strutt | | Whig | Edward Strutt | | Whig | Chancellor of the Duchy of Lancaster |
| Morpeth | 1 January 1853 | Edward Granville George Howard | | Whig | Sir George Grey | | Whig | Resignation |
| Hertford | 1 January 1853 | William Cowper | | Whig | William Cowper | | Whig | Civil Lord of the Admiralty |
| Carlisle | 1 January 1853 | Sir James Graham | | Peelite | Sir James Graham | | Peelite | First Lord of the Admiralty |
| Southwark | 1 January 1853 | Sir William Molesworth | | Radical | Sir William Molesworth | | Radical | First Commissioner of Works |
| Merthyr Tydfil | 14 December 1852 | John Josiah Guest | | Whig | Henry Bruce | | Whig | Death |
| Lisburn | 11 December 1852 | James Emerson Tennent | | Conservative | Roger Johnson Smyth | | Peelite | Resignation |
| Peterborough | 6 December 1852 | Richard Watson | | Whig | George Hammond Whalley | | Whig | Death |
| Bury St Edmunds | 4 December 1852 | John Stuart | | Conservative | James Henry Porteous Oakes | | Conservative | Resignation (Vice Chancellor) |
| Oldham | 3 December 1852 | John Duncuft | | Conservative | William Johnson Fox | | Whig | Death |
| City Durham | 3 December 1852 | Thomas Colpitts Granger | | Whig | Lord Adolphus Vane | | Conservative | Death |
| Abingdon | 3 December 1852 | James Caulfeild | | Whig | Lord Norreys | | Whig | Death |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 An uncontested by-election. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 Seat vacated on appointment to the office noted. 15th Parliament (1847–1852) ||||||||||
| By-election | Date | Former incumbent | Party | Party | Winner | Party | Party | Cause |
| Huntingdonshire | 11 June 1852 | George Thornhill | | Conservative | Viscount Mandeville | | Conservative | Death |
| Sandwich | 28 May 1852 | Charles William Grenfell | | Whig | Lord Charles Clinton | | Conservative | Resignation in order to contest Windsor |
| Windsor | 22 May 1852 | George Alexander Reid | | Conservative | Charles William Grenfell | | Whig | Death |
| Perth | 15 May 1852 | Fox Maule | | Whig | Arthur Kinnaird | | Whig | Succession to a peerage |
| Carmarthenshire | 13 May 1852 | George Rice-Trevor | | Conservative | David Jones | | Conservative | Succession to a peerage |
| Harwich | 8 May 1852 | Fitzroy Kelly | | Conservative | Isaac Butt | | Conservative | Resignation in order to contest East Suffolk |
| East Suffolk | 1 May 1852 | The Lord Rendlesham | | Conservative | Fitzroy Kelly | | Conservative | Death |
| Worcester | 28 April 1852 | Francis Rufford | | Conservative | William Laslett | | Whig | Resignation |
| Tavistock | 28 April 1852 | John Salusbury-Trelawny | | Whig | Samuel Carter | | Whig | Seeks re-election due to opposition from local party members |
| Harwich | 10 April 1852 | Robert Wigram Crawford | | Whig | Fitzroy Kelly | | Conservative | Void By-election |
| Monmouth Boroughs | 3 April 1852 | Reginald James Blewitt | | Whig | Crawshay Bailey | | Conservative | Resignation |
| Dungannon | 24 March 1852 | William Stuart Knox | | Conservative | William Stuart Knox | | Conservative | Parliamentary Groom in Waiting |
| South Shropshire | 23 March 1852 | Viscount Newport | | Conservative | Viscount Newport | | Conservative | Vice-Chamberlain of the Household |
| County Cork | 22 March 1852 | Maurice Power | | Irish Repeal | Vincent Scully | | Irish Repeal | Resignation (Governor of St. Lucia) |
| Coleraine | 22 March 1852 | John Boyd | | Conservative | Lord Naas | | Conservative | Resignation to provide a seat for Lord Naas |
| East Retford | 19 March 1852 | The Viscount Galway | | Conservative | The Viscount Galway | | Conservative | Lord-in-waiting |
| County Londonderry | 13 March 1852 | Thomas Bateson | | Conservative | Thomas Bateson | | Conservative | Junior Lord of the Treasury |
| North Lincolnshire | 13 March 1852 | Robert Adam Christopher | | Conservative | Robert Adam Christopher | | Conservative | Resignation pending appointment as Chancellor of the Duchy of Lancaster |
| Kildare | 13 March 1852 | Lord Naas | | Conservative | William Henry Ford Cogan | | Whig | Chief Secretary for Ireland |
| Tyrone | 12 March 1852 | Lord Claud Hamilton | | Conservative | Lord Claud Hamilton | | Conservative | Treasurer of the Household |
| South Lincolnshire | 12 March 1852 | Sir John Trollope | | Conservative | Sir John Trollope | | Conservative | President of the Poor Law Board |
| Buckinghamshire | 12 March 1852 | Benjamin Disraeli | | Conservative | Benjamin Disraeli | | Conservative | Chancellor of the Exchequer |
| Oxfordshire | 10 March 1852 | Joseph Warner Henley | | Conservative | Joseph Warner Henley | | Conservative | President of the Board of Trade |
| East Riding of Yorkshire | 9 March 1852 | Arthur Duncombe | | Conservative | Arthur Duncombe | | Conservative | Fourth Naval Lord |
| North Essex | 9 March 1852 | William Beresford | | Conservative | William Beresford | | Conservative | Secretary at War |
| Enniskillen | 9 March 1852 | James Whiteside | | Conservative | James Whiteside | | Conservative | Solicitor-General for Ireland |
| Dublin University | 9 March 1852 | Joseph Napier | | Conservative | Joseph Napier | | Conservative | Attorney-General for Ireland |
| Dorset | 9 March 1852 | George Bankes | | Conservative | George Bankes | | Conservative | Judge Advocate General |
| Portarlington | 8 March 1852 | Francis Plunkett Dunne | | Conservative | Francis Plunkett Dunne | | Conservative | Clerk of the Ordnance |
| Stamford | 6 March 1852 | John Charles Herries | | Conservative | John Charles Herries | | Conservative | President of the Board of Control |
| Midhurst | 5 March 1852 | Spencer Horatio Walpole | | Conservative | Spencer Horatio Walpole | | Conservative | Home Secretary |
| Buckingham | 5 March 1852 | Marquess of Chandos | | Conservative | Marquess of Chandos | | Conservative | Junior Lord of the Treasury |
| Abingdon | 5 March 1852 | Sir Frederic Thesiger | | Conservative | Sir Frederic Thesiger | | Conservative | Attorney General for England and Wales |
| Droitwich | 4 March 1852 | Sir John Pakington | | Conservative | Sir John Pakington | | Conservative | Secretary of State for War and the Colonies |
| Colchester | 4 March 1852 | Lord John Manners | | Conservative | Lord John Manners | | Conservative | First Commissioner of Works |
| Chichester | 4 March 1852 | Lord Henry Lennox | | Conservative | Lord Henry Lennox | | Conservative | Junior Lord of the Treasury |
| Wenlock | 3 March 1852 | George Weld-Forester | | Conservative | George Weld-Forester | | Conservative | Comptroller of the Household |
| East Kent | 16 February 1852 | John Pemberton Plumptre | | Conservative | Sir Brook Bridges | | Conservative | Resignation |
| Kinsale | 12 February 1852 | Benjamin Hawes | | Whig | John Isaac Heard | | Whig | Resignation |
| Northampton | 11 February 1852 | Robert Vernon Smith | | Whig | Robert Vernon Smith | | Whig | Secretary at War |
| Greenwich | 11 February 1852 | James Whitley Deans Dundas | | Whig | Houston Stewart | | Whig | Resignation |
| East Retford | 11 February 1852 | Arthur Duncombe | | Conservative | William Ernest Duncombe | | Conservative | Resignation in order to contest East Riding of Yorkshire |
| Perth | 9 February 1852 | Fox Maule | | Whig | Fox Maule | | Whig | President of the Board of Control |
| Lisburn | 5 January 1852 | Horace Beauchamp Seymour | | Peelite | James Emerson Tennent | | Conservative | Death |
| Bradford | 21 October 1851 | Robert Milligan | | Whig | William Busfeild | | Whig | Death |
| East Riding of Yorkshire | 7 October 1851 | Henry Broadley | | Conservative | Arthur Duncombe | | Conservative | Death |
| Downpatrick | 8 August 1851 | Richard Ker | | Peelite | Charles Hardinge | | Conservative | Resignation |
| Limerick City | 1 August 1851 | John O'Connell | | Irish Repeal | Earl of Arundel | | Ind. Whig | Resignation |
| Scarborough | 19 July 1851 | Earl of Mulgrave | | Whig | George Frederick Young | | Conservative | Comptroller of the Household |
| Arundel | 16 July 1851 | Earl of Arundel | | Whig | Edward Strutt | | Whig | Resignation in order to contest Limerick City |
| Knaresborough | 12 July 1851 | William Lascelles | | Whig | Thomas Collins | | Conservative | Death |
| Greenwich | 28 June 1851 | Edward George Barnard | | Whig | David Salomons | | Whig | Death |
| Bath | 25 June 1851 | Lord Ashley | | Conservative | George Treweeke Scobell | | Whig | Succession to a peerage |
| Clackmannanshire and Kinross-shire | 9 June 1851 | Sir William Morison | | Whig | James Johnstone | | Whig | Death |
| Argyllshire | 6 June 1851 | Duncan McNeill | | Conservative | Sir Archibald Islay Campbell | | Conservative | Resignation (Senator of the College of Justice) |
| Newry | 30 May 1851 | Viscount Newry | | Peelite | Edmund Gilling Hallewell | | Conservative | Death |
| Isle of Wight | 29 May 1851 | John Simeon | | Whig | Edward Dawes | | Whig | Resignation |
| Harwich | 28 May 1851 | Henry Thoby Prinsep | | Conservative | Robert Wigram Crawford | | Whig | Void By-Election |
| Cork City | 23 April 1851 | William Trant Fagan | | Irish Repeal | Francis Murphy | | Whig | Resignation |
| Boston | 22 April 1851 | Dudley Pelham | | Whig | James William Freshfield | | Conservative | Death |
| Longford | 21 April 1851 | Samuel Wensley Blackall | | Irish Repeal | Richard More O'Ferrall | | Whig | Resignation (Governor of Dominica) |
| Leith Burghs | 14 April 1851 | Andrew Rutherfurd | | Whig | James Moncreiff | | Whig | Resignation (Judge of the Court of Session) |
| Enniskillen | 12 April 1851 | Henry Arthur Cole | | Conservative | James Whiteside | | Conservative | Resignation |
| Aylesbury | 11 April 1851 | Frederick Calvert | | Whig | Richard Bethell | | Whig | Void By-Election |
| West Somerset | 10 April 1851 | Sir Alexander Hood | | Conservative | William Gore-Langton | | Conservative | Death |
| Coventry | 8 April 1851 | George James Turner | | Conservative | Charles Ponsonby | | Whig | Resignation (Vice Chancellor) |
| Oxford | 3 April 1851 | William Page Wood | | Whig | William Page Wood | | Whig | Solicitor General for England and Wales |
| Southampton | 2 April 1851 | Alexander Cockburn | | Whig | Alexander Cockburn | | Whig | Attorney General for England and Wales |
| Devonport | 2 April 1851 | John Romilly | | Whig | John Romilly | | Whig | Master of the Rolls |
| Dungarvan | 22 March 1851 | Richard Lalor Sheil | | Whig | Charles Ponsonby | | Whig | Resignation (Minister to Tuscany) |
| Thirsk | 21 March 1851 | John Bell | | Conservative | Sir William Payne-Gallwey | | Conservative | Death |
| Harwich | 5 March 1851 | Sir John Hobhouse | | Whig | Henry Thoby Prinsep | | Conservative | Resignation and elevation to the peerage |
| Glamorganshire | 25 February 1851 | The Earl of Dunraven | | Conservative | Sir George Tyler | | Conservative | Resignation |
| Bedfordshire | 24 February 1851 | Viscount Alford | | Conservative | Richard Gilpin | | Conservative | Death |
| North Staffordshire | 22 February 1851 | Viscount Brackley | | Conservative | Sir Smith Child | | Conservative | Resignation |
| South Nottinghamshire | 17 February 1851 | Robert Bromley | | Conservative | William Hodgson Barrow | | Conservative | Death |
| Falkirk Burghs | 14 February 1851 | Earl of Lincoln | | Conservative | James Baird | | Conservative | Succession to a peerage |
| Dungannon | 14 February 1851 | Viscount Northland | | Conservative | William Stuart Knox | | Conservative | Resignation |
| Pontefract | 13 February 1851 | Samuel Martin | | Whig | Beilby Lawley | | Whig | Resignation (Baron of the Exchequer) |
| Windsor | 10 February 1851 | John Hatchell | | Whig | John Hatchell | | Whig | Attorney-General for Ireland |
| Aylesbury | 27 December 1850 | The Lord Nugent | | Whig | Frederick Calvert | | Whig | Death |
| St Albans | 24 December 1850 | Alexander Raphael | | Whig | Jacob Bell | | Whig | Death |
| County Limerick | 14 December 1850 | Samuel Dickson | | Whig | Wyndham Goold | | Whig | Death |
| Herefordshire | 18 October 1850 | Joseph Bailey | | Conservative | Thomas William Booker-Blakemore | | Conservative | Death |
| Montgomeryshire | 11 October 1850 | Charles Williams-Wynn | | Conservative | Herbert Williams-Wynn | | Conservative | Death |
| Cambridge University | 4 October 1850 | Charles Law | | Conservative | Loftus Wigram | | Conservative | Death |
| Poole | 24 September 1850 | George Richard Robinson | | Conservative | Henry Danby Seymour | | Whig | Death |
| Lambeth | 7 August 1850 | Charles Pearson | | Whig | William Williams | | Whig | Resignation |
| Dungannon | 3 August 1850 | Viscount Northland | | Conservative | Viscount Northland | | Conservative | Resigned seat and was re-elected without his knowledge or consent |
| Mayo | 29 July 1850 | Robert Dillon Browne | | Irish Repeal | George Gore Ousley Higgins | | Whig | Death |
| Chester | 22 July 1850 | John Jervis | | Whig | William Owen Stanley | | Whig | Resignation |
| Tamworth | 19 July 1850 | Sir Robert Peel | | Peelite | Sir Robert Peel | | Peelite | Death |
| Southampton | 17 July 1850 | Alexander Cockburn | | Whig | Alexander Cockburn | | Whig | Solicitor General for England and Wales |
| Devonport | 17 July 1850 | Sir John Romilly | | Whig | Sir John Romilly | | Whig | Attorney General for England and Wales |
| Lymington | 30 April 1850 | George Keppel | | Whig | Edward John Hutchins | | Whig | Resignation |
| Totnes | 30 March 1850 | Lord Seymour | | Whig | Lord Seymour | | Whig | First Commissioner of Woods and Forests |
| County Sligo | 12 March 1850 | John Ffolliott | | Conservative | Sir Robert Gore-Booth | | Conservative | Resignation |
| Canterbury | 4 March 1850 | Albert Denison | | Whig | Frederick Romilly | | Whig | Resignation and elevation to the peerage |
| Kirkcudbrightshire | 20 February 1850 | Thomas Maitland | | Whig | John Mackie | | Whig | Resignation (Judge of the Court of Session) |
| Colchester | 9 February 1850 | George Henry Smyth | | Conservative | Lord John Manners | | Conservative | Resignation |
| Windsor | 6 February 1850 | Lord John Hay | | Whig | John Hatchell | | Whig | Resignation |
| New Shoreham | 28 December 1849 | Charles Goring | | Conservative | Lord Alexander Gordon-Lennox | | Conservative | Death |
| Cork City | 14 November 1849 | Daniel Callaghan | | Irish Repeal | James Charles Chatterton | | Conservative | Death |
| West Surrey | 27 September 1849 | William Denison | | Whig | William John Evelyn | | Conservative | Death |
| Kidderminster | 5 September 1849 | Richard Godson | | Peelite | John Best | | Peelite | Death |
| Reading | 8 August 1849 | Thomas Noon Talfourd | | Whig | Viscount Chelsea | | Conservative | Resignation (Puisne Judge of the Court of Common Pleas) |
| Boston | 2 August 1849 | Sir James Duke | | Whig | Dudley Pelham | | Whig | Resignation in order to contest City of London |
| City of London | 27 July 1849 | James Pattison | | Whig | Sir James Duke | | Whig | Death |
| City of London | 4 July 1849 | Lionel de Rothschild | | Whig | Lionel de Rothschild | | Whig | Seeks re-election following the rejection of the Jewish Disabilities Bill |
| South Warwickshire | 7 June 1849 | Evelyn Shirley | | Conservative | Lord Guernsey | | Conservative | Resignation |
| Sutherland | 5 June 1849 | Sir David Dundas | | Whig | Sir David Dundas | | Whig | Judge Advocate General |
| County Limerick | 1 June 1849 | William Smith O'Brien | | Irish Confederate | Samuel Dickson | | Whig | Disqualification (conviction for high treason) |
| Sheffield | 3 May 1849 | Henry George Ward | | Whig | John Arthur Roebuck | | Ind. Whig | Resignation |
| South Nottinghamshire | 17 April 1849 | Lancelot Rolleston | | Conservative | Robert Bromley | | Conservative | Resignation |
| North Hampshire | 6 April 1849 | Sir William Heathcote | | Conservative | Melville Portal | | Conservative | Resignation |
| South Derbyshire | 23 March 1849 | Edward Miller Mundy | | Conservative | William Mundy | | Conservative | Death |
| Donegal | 20 February 1849 | Edward Michael Conolly | | Conservative | Thomas Conolly | | Conservative | Death |
| South Staffordshire | 19 February 1849 | Viscount Ingestre | | Conservative | Viscount Lewisham | | Conservative | Succession to a peerage |
| South Devon | 13 February 1849 | Lord Courtenay | | Conservative | Sir Ralph Lopes | | Conservative | Resignation |
| Cardigan Boroughs | 12 February 1849 | Pryse Pryse | | Whig | Pryse Loveden | | Whig | Death |
| Bolton | 9 February 1849 | John Bowring | | Whig | Joshua Walmsley | | Whig | Resignation |
| Kingston upon Hull | 7 February 1849 | Matthew Talbot Baines | | Whig | Matthew Talbot Baines | | Whig | President of the Poor Law Board |
| Portsmouth | 6 February 1849 | Francis Baring | | Whig | Francis Baring | | Whig | First Lord of the Admiralty |
| Leominster | 6 February 1849 | Henry Barkly | | Conservative | Frederick Peel | | Conservative | Resignation (Governor of British Guiana) |
| Truro | 11 January 1849 | Edmund Turner | | Whig | Humphrey Willyams | | Whig | Death |
| Liskeard | 3 January 1849 | Charles Buller | | Whig | Richard Budden Crowder | | Whig | Death |
| King's Lynn | 22 December 1848 | Lord George Bentinck | | Conservative | Edward Stanley | | Conservative | Death |
| West Riding of Yorkshire | 11 December 1848 | Viscount Morpeth | | Whig | Edmund Beckett | | Conservative | Succession to a peerage |
| Bolton | 12 September 1848 | William Bolling | | Conservative | Stephen Blair | | Conservative | Death |
| Cheltenham | 4 September 1848 | Craven Berkeley | | Whig | Grenville Berkeley | | Whig | Void election |
| Leicester | 2 September 1848 | Joshua Walmsley | | Whig | John Ellis | | Whig | Void election |
| Leicester | 2 September 1848 | Richard Gardner | | Whig | Richard Harris | | Whig | Void election |
| Derby | 2 September 1848 | Frederick Leveson-Gower | | Whig | Michael Thomas Bass | | Whig | Void election |
| Derby | 2 September 1848 | Edward Strutt | | Whig | Lawrence Heyworth | | Whig | Void election |
| Thetford | 8 August 1848 | Bingham Baring | | Conservative | Francis Baring | | Conservative | Succession to a peerage |
| Sligo Borough | 15 July 1848 | Charles Towneley | | Whig | John Patrick Somers | | Irish Repeal | Void By-Election |
| Great Yarmouth | 8 July 1848 | Lord Arthur Lennox | | Conservative | Joseph Sandars | | Conservative | Void election |
| Great Yarmouth | 8 July 1848 | Octavius Coope | | Conservative | Charles Rumbold | | Whig | Void election |
| Cheltenham | 29 June 1848 | Willoughby Jones | | Conservative | Craven Berkeley | | Whig | Void election |
| Horsham | 28 June 1848 | John Jervis | | Whig | William Vesey-FitzGerald | | Conservative | Void election |
| Horsham | 28 June 1848 | William Vesey-FitzGerald | | Conservative | Lord Edward Howard | | Whig | By-election result reversed on petition |
| North Cheshire | 8 June 1848 | Edward Stanley | | Whig | George Legh | | Conservative | Elevation to the peerage |
| York | 24 May 1848 | Henry Galgacus Redhead Yorke | | Whig | William Milner | | Whig | Death |
| Cirencester | 24 May 1848 | William Cripps | | Conservative | Joseph Randolph Mullings | | Conservative | Death |
| Wicklow | 27 April 1848 | William Acton | | Conservative | Ralph Howard | | Whig | Resignation |
| Bewdley | 18 April 1848 | Thomas James Ireland | | Conservative | Viscount Mandeville | | Conservative | Void election |
| Sligo Borough | 11 April 1848 | John Patrick Somers | | Irish Repeal | Charles Towneley | | Whig | Void election |
| Rye | 6 April 1848 | Herbert Mascall Curteis | | Whig | Herbert Mascall Curteis | | Whig | Void By-Election |
| Devonport | 3 April 1848 | John Romilly | | Whig | John Romilly | | Whig | Solicitor General for England and Wales |
| Harwich | 1 April 1848 | John Attwood | | Conservative | Sir John Hobhouse | | Whig | Void election |
| Aylesbury | 29 March 1848 | John Peter Deering | | Conservative | Quintin Dick | | Conservative | Void election |
| Monmouthshire | 24 March 1848 | Lord Granville Somerset | | Conservative | Edward Arthur Somerset | | Conservative | Death |
| Lincoln | 16 March 1848 | Charles Seely | | Whig | Thomas Hobhouse | | Whig | Void election |
| Carlisle | 14 March 1848 | William Nicholson Hodgson | | Conservative | William Nicholson Hodgson | | Conservative | Void election |
| Carlisle | 14 March 1848 | John Dixon | | Whig | Philip Howard | | Whig | Void election |
| Kinsale | 11 March 1848 | Richard Samuel Guinness | | Conservative | Benjamin Hawes | | Whig | Void election |
| Lancaster | 9 March 1848 | Samuel Gregson | | Whig | Robert Baynes Armstrong | | Whig | Void election |
| Waterford City | 1 March 1848 | Daniel O'Connell | | Irish Repeal | Sir Henry Barron | | Whig | Resignation |
| Devizes | 25 February 1848 | William Heald Ludlow Bruges | | Conservative | James Bucknall Bucknall Estcourt | | Conservative | Resignation |
| Dublin University | 19 February 1848 | Frederick Shaw | | Conservative | Joseph Napier | | Conservative | Resignation |
| North Shropshire | 16 February 1848 | Viscount Clive | | Conservative | John Whitehall Dod | | Conservative | Succession to a peerage |
| Wells | 27 December 1847 | William Goodenough Hayter | | Whig | William Goodenough Hayter | | Whig | Judge Advocate General |
| Calne | 27 December 1847 | Earl of Shelburne | | Whig | Earl of Shelburne | | Whig | Junior Lord of the Treasury |
| Rye | 23 December 1847 | Herbert Barrett Curteis | | Whig | Herbert Mascall Curteis | | Whig | Death |
| Sunderland | 22 December 1847 | David Barclay | | Whig | Sir Hedworth Williamson | | Whig | Resignation |
| South Lancashire | 20 December 1847 | Charles Pelham Villiers | | Whig | Alexander Henry | | Whig | Double election, chose to sit for Wolverhampton |
| Tamworth | 18 December 1847 | William Yates Peel | | Conservative | John Townshend | | Whig | Resignation |
| Kilkenny City | 18 December 1847 | John O'Connell | | Irish Repeal | Michael Sullivan | | Irish Repeal | Double election, chose to sit for Limerick City |
| Stockport | 16 December 1847 | Richard Cobden | | Radical | James Kershaw | | Whig | Double election, chose to sit for the West Riding of Yorkshire |
| Weymouth and Melcombe Regis | 15 December 1847 | William Dougal Christie | | Whig | Frederick Child Villiers | | Conservative | Resignation (to avoid election petition) |
| Newcastle-under-Lyme | 15 December 1847 | Samuel Christy | | Conservative | Samuel Christy | | Conservative | Seeks re-election due to his firm holding a government contract |
| Edinburgh | 15 December 1847 | Charles Cowan | | Whig | Charles Cowan | | Whig | Disqualification (held government contract) |
| Liskeard | 14 December 1847 | Charles Buller | | Whig | Charles Buller | | Whig | President of the Poor Law Board |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 An uncontested by-election. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Seat vacated on appointment to the office noted. 1 2 Naas sought re-election at Coleraine. ↑ Seat abolished 3 May 1852. ||||||||||