| Aberafan Maesteg | Wales | W07000081 |
| Aberdeen North | Scotland | S14000060 |
| Aberdeen South | Scotland | S14000061 |
| Aberdeenshire North and Moray East | Scotland | S14000062 |
| Airdrie and Shotts | Scotland | S14000063 |
| Aldershot | England | E14001063 |
| Aldridge-Brownhills | England | E14001064 |
| Alloa and Grangemouth | Scotland | S14000064 |
| Altrincham and Sale West | England | E14001065 |
| Alyn and Deeside | Wales | W07000082 |
| Amber Valley | England | E14001066 |
| Angus and Perthshire Glens | Scotland | S14000065 |
| Arbroath and Broughty Ferry | Scotland | S14000066 |
| Argyll, Bute and South Lochaber | Scotland | S14000067 |
| Arundel and South Downs | England | E14001067 |
| Ashfield | England | E14001068 |
| Ashford | England | E14001069 |
| Ashton-under-Lyne | England | E14001070 |
| Aylesbury | England | E14001071 |
| Ayr, Carrick and Cumnock | Scotland | S14000107 |
| Banbury | England | E14001072 |
| Bangor Aberconwy | Wales | W07000083 |
| Barking | England | E14001073 |
| Barnsley North | England | E14001074 |
| Barnsley South | England | E14001075 |
| Barrow and Furness | England | E14001076 |
| Basildon and Billericay | England | E14001077 |
| Basingstoke | England | E14001078 |
| Bassetlaw | England | E14001079 |
| Bath | England | E14001080 |
| Bathgate and Linlithgow | Scotland | S14000068 |
| Battersea | England | E14001081 |
| Beaconsfield | England | E14001082 |
| Beckenham and Penge | England | E14001083 |
| Bedford | England | E14001084 |
| Belfast East | Northern Ireland | N05000001 |
| Belfast North | Northern Ireland | N05000002 |
| Belfast South and Mid Down | Northern Ireland | N05000003 |
| Belfast West | Northern Ireland | N05000004 |
| Bermondsey and Old Southwark | England | E14001085 |
| Berwickshire, Roxburgh and Selkirk | Scotland | S14000108 |
| Bethnal Green and Stepney | England | E14001086 |
| Beverley and Holderness | England | E14001087 |
| Bexhill and Battle | England | E14001088 |
| Bexleyheath and Crayford | England | E14001089 |
| Bicester and Woodstock | England | E14001090 |
| Birkenhead | England | E14001091 |
| Birmingham Edgbaston | England | E14001092 |
| Birmingham Erdington | England | E14001093 |
| Birmingham Hall Green and Moseley | England | E14001094 |
| Birmingham Hodge Hill and Solihull North | England | E14001095 |
| Birmingham Ladywood | England | E14001096 |
| Birmingham Northfield | England | E14001097 |
| Birmingham Perry Barr | England | E14001098 |
| Birmingham Selly Oak | England | E14001099 |
| Birmingham Yardley | England | E14001100 |
| Bishop Auckland | England | E14001101 |
| Blackburn | England | E14001102 |
| Blackley and Middleton South | England | E14001103 |
| Blackpool North and Fleetwood | England | E14001104 |
| Blackpool South | England | E14001105 |
| Blaenau Gwent and Rhymney | Wales | W07000084 |
| Blaydon and Consett | England | E14001106 |
| Blyth and Ashington | England | E14001107 |
| Bognor Regis and Littlehampton | England | E14001108 |
| Bolsover | England | E14001109 |
| Bolton North East | England | E14001110 |
| Bolton South and Walkden | England | E14001111 |
| Bolton West | England | E14001112 |
| Bootle | England | E14001113 |
| Boston and Skegness | England | E14001114 |
| Bournemouth East | England | E14001115 |
| Bournemouth West | England | E14001116 |
| Bracknell | England | E14001117 |
| Bradford East | England | E14001118 |
| Bradford South | England | E14001119 |
| Bradford West | England | E14001120 |
| Braintree | England | E14001121 |
| Brecon, Radnor and Cwm Tawe | Wales | W07000085 |
| Brent East | England | E14001122 |
| Brent West | England | E14001123 |
| Brentford and Isleworth | England | E14001124 |
| Brentwood and Ongar | England | E14001125 |
| Bridgend | Wales | W07000086 |
| Bridgwater | England | E14001126 |
| Bridlington and The Wolds | England | E14001127 |
| Brigg and Immingham | England | E14001128 |
| Brighton Kemptown and Peacehaven | England | E14001129 |
| Brighton Pavilion | England | E14001130 |
| Bristol Central | England | E14001131 |
| Bristol East | England | E14001132 |
| Bristol North East | England | E14001133 |
| Bristol North West | England | E14001134 |
| Bristol South | England | E14001135 |
| Broadland and Fakenham | England | E14001136 |
| Bromley and Biggin Hill | England | E14001137 |
| Bromsgrove | England | E14001138 |
| Broxbourne | England | E14001139 |
| Broxtowe | England | E14001140 |
| Buckingham and Bletchley | England | E14001141 |
| Burnley | England | E14001142 |
| Burton and Uttoxeter | England | E14001143 |
| Bury North | England | E14001144 |
| Bury South | England | E14001145 |
| Bury St Edmunds and Stowmarket | England | E14001146 |
| Caerfyrddin | Wales | W07000087 |
| Caerphilly | Wales | W07000088 |
| Caithness, Sutherland and Easter Ross | Scotland | S14000069 |
| Calder Valley | England | E14001147 |
| Camborne and Redruth | England | E14001148 |
| Cambridge | England | E14001149 |
| Cannock Chase | England | E14001150 |
| Canterbury | England | E14001151 |
| Cardiff East | Wales | W07000089 |
| Cardiff North | Wales | W07000090 |
| Cardiff South and Penarth | Wales | W07000091 |
| Cardiff West | Wales | W07000092 |
| Carlisle | England | E14001152 |
| Carshalton and Wallington | England | E14001153 |
| Castle Point | England | E14001154 |