List of United Kingdom Parliament constituencies (1997 to present) by region

England
East Midlands (44 then 46)
Derbyshire (10 then 11)
Leicestershire (10)
Lincolnshire (7)
Northamptonshire (6 then 7)
1seat won by Labour in a 2012 by-election
Nottinghamshire (11)
East of England (56 then 58)
Bedfordshire (6)
Cambridgeshire (7)
Essex (17 then 18)
Hertfordshire (11)
Norfolk (8 then 9)
Suffolk (7)
Greater London (74 then 73)
North East London Boroughs (23 then 22)
The boroughs of Enfield, Haringey, Islington, Hackney, Tower Hamlets, Newham, Waltham Forest, Redbridge, Barking & Dagenham and Havering.
North West London Boroughs (20)
The boroughs of Hillingdon, Harrow, Brent, Ealing, Barnet, Camden, Hammersmith & Fulham, Kensington & Chelsea and Westminster, and the City of London.
South East London Boroughs (16)
The boroughs of Lambeth, Southwark, Lewisham, Bromley, Greenwich and Bexley.
South West London Boroughs (15)
The boroughs of Hounslow, Richmond, Kingston, Wandsworth, Merton, Sutton and Croydon.
1MP sat as an Independent Conservative from Sep 2007 and an independent from Oct 2008
Seats:
Votes:
London total seats
North East England (30 then 29)
Cleveland (6)
Durham (7)
Northumberland (4)
Tyne and Wear (13 then 12)
North West England (76 then 75)
Cheshire (11)
1seat gained by the Conservatives in a May 2008 by-election
Cumbria (6)
Greater Manchester (28 then 27)
1MP sat as an independent from Dec 2015
Lancashire (15 then 16)
1MP sat as an independent Sep 2013 - Apr 2014
Merseyside (16 then 15)
1MP sat as an independent from Sep 2007
South East England (83 then 84)
Berkshire (8)
Buckinghamshire (7)
1MP sat as Speaker from Jun 2009
East Sussex (8)
Hampshire (17 then 18)
1MP sat as an independent from Jun 2013
2MP sat as an independent from Oct 2002
Isle of Wight (1)
Kent (17)
Oxfordshire (6)
Surrey (11)
West Sussex (8)
South West England (51 then 55)
Avon (10 then 11)
Cornwall (5 then 6)
Devon (11 then 12)
Dorset (8)
Gloucestershire (6)
Somerset (5)
Wiltshire (6 then 7)
West Midlands (59)
Hereford and Worcester (8)
Shropshire (5)
1MP defected to the Liberal Democrats shortly after election
Staffordshire (12)
Warwickshire (5 then 6)
West Midlands (county) (29 then 28)
1MP sat as Independent Labour from Oct 2006
Yorkshire and the Humber (56 then 54)
Humberside (10)
North Yorkshire (8)
South Yorkshire (15 then 14)
1MP sat as an independent May 2010 - Feb 2011
2MP sat as an independent Oct 2010 - Jul 2012
West Yorkshire (23 then 22)
1seat won by Respect in a 2012 by-election
Northern Ireland (18)
1MP sat as an independent from Jun 2003 - Jan 2004
2MP sat as an independent from Jun 2003 - Jan 2004
3MP sat as an independent from Jun 2003 and defected to the Democratic Unionists in Jan 2004
Scotland
The Fifth Periodical Review of the Boundary Commission for Scotland related the boundaries of new constituencies to those of Scottish local government council areas and to local government wards. Apart from a few minor adjustments, the council area boundaries dated from 1996 and the ward boundaries dated from 1999. Some council areas were grouped to form larger areas and, within these larger areas, some constituencies straddle council area boundaries.
Dumfries and Galloway (2 then 1)
Scottish Borders (2)
Lothian (10 then 9)
1MP sat as an independent from Sep 2015
Strathclyde (32 then 25)
1MP sat as an independent from Nov 2015
2seat gained by the SNP in a Jul 2008 by-election
3seat gained by Labour in a Nov 2009 by-election
4MP defected to the Respect Party in Jan 2004
Tayside (6 then 7)
Central (4 then 2)
1MP sat as an independent from Feb 2012
Fife (5 then 4)
1seat gained by the Liberal Democrats in a Feb 2006 by-election
Grampian (7 then 6)
Highland (5)
Wales (40)
Gwynedd (4 then 3)
Votes:
Clwyd (6 then 7)
In 2003 the border between Gwynedd and Clwyd was shifted. Conwy and Meirionydd Nant Conwy went from being entirely within Gwynedd to being split between Gwynedd and Clwyd.