Constituencies: D
23 constituencies
| Constituency | Nation | GSS code |
|---|---|---|
| Dagenham and Rainham | England | E14001189 |
| Darlington | England | E14001190 |
| Dartford | England | E14001191 |
| Daventry | England | E14001192 |
| Derby North | England | E14001193 |
| Derby South | England | E14001194 |
| Derbyshire Dales | England | E14001195 |
| Dewsbury and Batley | England | E14001196 |
| Didcot and Wantage | England | E14001197 |
| Doncaster Central | England | E14001198 |
| Doncaster East and the Isle of Axholme | England | E14001199 |
| Doncaster North | England | E14001200 |
| Dorking and Horley | England | E14001201 |
| Dover and Deal | England | E14001202 |
| Droitwich and Evesham | England | E14001203 |
| Dudley | England | E14001204 |
| Dulwich and West Norwood | England | E14001205 |
| Dumfries and Galloway | Scotland | S14000073 |
| Dumfriesshire, Clydesdale and Tweeddale | Scotland | S14000074 |
| Dundee Central | Scotland | S14000075 |
| Dunfermline and Dollar | Scotland | S14000076 |
| Dunstable and Leighton Buzzard | England | E14001206 |
| Dwyfor Meirionnydd | Wales | W07000096 |