| Donegal |
|
| Donegal East |
|
| Donegal North |
|
| Donegal South |
|
| Donegal West |
|
| Don Valley |
Full name (in Craig 3,4) Yorkshire (West Riding), Don Valley |
| Dorchester |
|
| Dorking |
Full name (in Craig 4) Surrey, Dorking |
| Dorking and Horley |
|
| Dorset |
|
| Dorset Eastern |
|
| Dorset Mid and Poole North |
|
| Dorset North |
|
| Dorset Northern |
|
| Dorset South |
|
| Dorset Southern |
|
| Dorset West |
|
| Dorset Western |
|
| Dover |
Constituency of same name also existed 1832-1974ยน. |
| Dover |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 3,4) Kent, Dover. Constituency of same name reformed 1983. |
| Dover and Deal |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Dover and Deal |
|
| Down |
Constituency of same name also existed 1922-1950. |
| Down |
Constituency of same name also existed 1832-1885. |
| Down East |
|