| Region/Constituency | Seats | Local authorities |
| England | 503 | |
| Wales | 29 | |
| Scotland | 51 | |
| Northern Ireland | 17 | |
| England | ||
| North East | 25 | |
| North West | 67 | |
| Yorkshire & Humberside | 51 | |
| East Midlands | 43 | |
| West Midlands | 53 | |
| East of England | 56 | |
| London | 75 | |
| South East | 82 | |
| South West | 51 | |
| North East | ||
| County Durham | 5 | |
| North Tyne | 4 | Newcastle, North Tyneside |
| South Tyne | 3 | Gateshead, South Tyneside |
| Sunderland | 3 | |
| Northumberland | 3 | |
| Teeside | 4 | Stockton, Darlington, Hartlepool |
| Cleveland | 3 | M’boro, Redcar |
| North West | ||
| Cheshire East | 4 | |
| Cheshire West | 3 | |
| Halton and Warrington | 3 | |
| Cumbria | 5 | |
| City of Manchester | 5 | |
| Rochdale and Oldham | 4 | |
| Bolton and Bury | 4 | |
| Salford and Trafford | 4 | |
| Stockport and Tameside | 5 | |
| Wigan | 3 | |
| Fylde and Wyre | 4 | Preston, Fylde, Wyre, Blackpool |
| South Lancashire | 3 | Chorley, South Ribble, West Lancashire |
| Lancaster and the Ribble Valley | 3 | Lancaster, Ribble Valley, Pendle |
| Blackburn and Burnley | 4 | Blackburn, Burley, Hyndburn, Rossendale |
| Liverpool | 4 | |
| The Wirral | 3 | |
| Sefton | 3 | |
| Knowsley and St Helens | 3 | |
| Yorkshire & Humberside | ||
| Bradford | 5 | |
| Calderdale and Kirklees | 6 | |
| Leeds West | 4 | Leeds W, Leeds C, Pudsey, Morley |
| Leeds East | 4 | Leeds NW, Leeds NE, Leeds E, Emlet |
| Wakefield | 3 | |
| York, Selby, and Harrogate | 4 | |
| Yorkshire Dales and the Vale of York | 3 | Craven, Hambleton, Richmondshire, Ryedale, Scarborough |
| Humber Estuary | 6 | Hull, North & NE Lincolnshire |
| East Riding of Yorkshire | 3 | |
| Sheffield | 5 | |
| Barnsley and Rotherham | 5 | |
| Doncaster | 3 | |
| East Midlands | ||
| North Derbyshire | 4 | Bolsover, Chesterfield, Derbyshire Dales, High Peak, N.E. Derbyshire |
| South Derbyshire | 5 | South Derbyshire, Erewash, Derby, Amber Valley |
| Leicester | 3 | |
| North Leicestershire | 3 | Melton, N.W. Leicestershire, Charnwood |
| South Leicestershire | 3 | |
| Lincoln and Lindsey | 3 | Lincoln, Lindsey |
| South Lincolnshire | 4 | Boston, Kesteven, Holland |
| East Northamptonshire and Rutland | 3 | Wellingborough, Corby, Kettering, East Northamptonshire, Rutland |
| West Northamptonshire | 4 | South Northamptonshire, Northamphton, Daventry |
| Newark, Mansfield and Worksop | 3 | Mansfield, Newark and Sherwood, Bassetlaw |
| Outer Nottingham | 5 | Ashfield, Bassetlaw, Broxtowe, Gedling, and Rushcliffe |
| Nottingham | 3 | |
| West Midlands | ||
| Herefordshire and Shropshire | 6 | Hereford, Shropshire, Telford |
| Stoke and Newcastle | 4 | Stoke, Newcastle-under-Lyme |
| West Staffordshire | 3 | Stafford, South Staffordshire, and Cannock Chase |
| East Staffordshire | 4 | Staffordshire Moorlands, East Staffordshire, Lichfield, Tamworth |
| Warwickshire | 5 | |
| Coventry and Solihull | 5 | |
| Dudley and Wolverhampton | 5 | |
| Walsall and Sandwell | 5 | |
| Birmingham South | 5 | Edgebaston, Hall Green, Northfield, Selly Oak, Yardley |
| Birmingham North | 5 | Erdington, Hall Green, Hodge Hill, Lady Wood, Sutton Coleford |
| Worcestershire | 6 | |
| East of England | ||
| Bedford and Luton | 6 | Bedford, Central Bedfordshire |
| Peterborough and Huntingdon | 4 | Peterborough, Fenland, Huntingdonshire |
| Cambridgeshire | 3 | Rest of Cambridgeshire |
| Colchester and Tendring | 3 | |
| Chelmsford and Braintree | 3 | |
| West Essex | 3 | Epping Forest, Uttlesford, Harlow |
| Basildon and Thurrock | 4 | Brentwood, Basildon, Thurrock |
| Maldon and Southend-on-Sea | 4 | Maldon, Castle Point, Rochford, Southend on Sea |
| East Hertfordshire | 4 | North Hertfordshire, East Hertforshire, Broxborne, Stevange |
| St. Albans and Hatfield | 3 | St. Albans, Welwyn Hatfield, Herstsmere |
| West Hertfordshire | 3 | Watford, Three Rivers, Dacorum |
| North and West Norfolk | 4 | Kings Lynn and West Norfolk, Breckland, North Norfolk |
| South and East Norfolk | 5 | Broadland, Yarmouth, Norwich, South Norfolk |
| Suffolk Coast | 4 | Ipswich, Suffolk Coastal, Waveney |
| West Suffolk | 3 | Babergh, Forest Heath, Mid Suffolk, Waveney |
| London | ||
| Inner London | 30 | |
| Outer London | 45 | |
| Inner London | ||
| Camden and Islington | 4 | |
| Cities of London and Westminster | 3 | |
| Kensington and Hammersmith | 3 | |
| Wandsworth | 3 | |
| Lambeth | 3 | |
| Southwark and Lewisham | 5 | |
| Newham and Tower Hamlets | 5 | |
| Haringey and Hackney | 4 | |
| Outer London | ||
| Dagenham and Havering | 4 | |
| Redbridge and Waltham | 5 | |
| Barnet | 3 | |
| Enfield | 3 | |
| Harrow and Brent | 5 | |
| Ealing | 3 | |
| Hillingdon and Hounslow | 5 | |
| Richmond and Kingston | 3 | |
| Merton and Sutton | 4 | |
| Croydon | 3 | |
| Bromley | 3 | |
| Bexley and Greenwich | 4 | |
| South East | ||
| Thames Estuary | 4 | Dartford, Medway, Gravesham |
| Sevenoaks and Tonbridge | 3 | Sevenoaks, Tonbridge and Malling, Tunbridge Wells |
| Mid Kent | 4 | Ashford, Swale, Maidstone |
| East Kent | 5 | Thanet, Shepway, Dover, Canterbury |
| East Sussex | 5 | |
| Brighton and Worthing | 4 | Brighton and Hove, Adur, Worthing |
| Mid Sussex | 4 | Crawley, Mid Sussex, Horsham |
| West Sussex | 3 | Chichester and Arun |
| East Surrey | 3 | Epsom, Reigate, Tandridge |
| Mid Surrey | 4 | Elmbridge, Mole Valley, Spelthorne, Runnymede |
| West Surrey | 4 | Guildford, Surrey Heath, Waverley, Woking |
| Milton Keynes and Aylesbury | 4 | |
| Chilterns | 3 | |
| East Berkshire | 4 | Windsor, Bracknell Forest, Slough, |
| West Berkshire | 5 | Reading, Wokingham, West Berkshire |
| North Hampshire | 3 | Basingstoke, Hart, Rushmoor |
| Mid Hampshire | 3 | Test Valley, Winchester, East Hampshire |
| Southampton and the New Forest | 5 | New Forest, Southhampton, Eastleigh |
| Portsmouth | 5 | Portsmough, Gosport, Havant, Fareham |
| Isle of Wight | 1 | |
| Oxfordshire | 6 | |
| South West | ||
| Cornwall and the Isles of Scilly | 5 | |
| North Devon | 4 | North Devon, West Devon, Torridge, Mid Devon, East Devon |
| Exeter and Torbay | 4 | Exeter, Teignbridge, Torbay |
| Plymouth | 3 | |
| Dorset | 4 | Weymouth, East Dorset, North Dorset, West Dorset, Purbeck |
| Bournemouth and Poole | 3 | Bournemouth, Poole, Christchurch |
| Wiltshire and Swindon | 6 | |
| Somerset | 5 | |
| Bristol | 4 | |
| Bath and North Somerset | 4 | Bath and North Somerset, North-East Somerset |
| North Gloucestershire | 5 | Cheltenham, Tewkesbury, Gloucester, Forest of Dean, Cotswold |
| South Gloucestershire and Stroud | 4 | Stroud, South Gloucestershire |
| Wales | ||
| Gwynedd and Powys | 3 | Gwynedd, Anglesey, Powys |
| Clywd | 5 | Conwy, Denbighshire, Flintshire, Wrexham |
| Dyfed | 4 | Ceredigion, Pembrokeshire, Carmarthenshire |
| West Glamorgan | 4 | Swansea and Neath Port Talbot |
| South Glamorgan | 4 | Cardiff and the Vale of Glamorgan |
| Mid Glamorgan | 4 | Bridgend, Merthyr Tydfil, Rhondda Cynon Taf |
| Gwent | 5 | Carephilly, Blaenau Gwent, Torfaen, Monmouthshire, Newport |
| Scotland | ||
| Northern Islands | 1 | Orkney and the Shetland Islands |
| Eilean Siar | 1 | |
| Highland and Moray | 3 | |
| Aberdeenshire | 4 | Aberdeen City, Aberdeenshire |
| Dundee, Angus and Perth | 4 | |
| Stirling, Argyle, and Dunbarton | 4 | |
| Inverclyde and Renfrewshire | 3 | |
| Glasgow | 6 | |
| North Lanarkshire | 3 | |
| South Lanarkshire | 3 | |
| Ayrshire, Dumfries, and Galloway | 5 | |
| Lothian and the Borders | 3 | Midlothian, East Lothian, Borders |
| Edinburgh | 4 | |
| Falkirk and West Lothian | 3 | |
| Fife and Clackmanshire | 4 | |
| Northern Ireland | ||
| Fermangh, Tyrone, and Derry | 5 | Derry, Limavady, Magherafelt, Coleraine, Omagh, Fermangh, Stabane, Cookstown, Dungannon |
| Antrim | 3 | Ballymena, Ballymoney, Moyle, Larne, Lisburn |
| Belfast | 5 | Belfast, Newtonabbey, Carrickfergus, North Down |
| Down and Armagh | 4 | |