43 cities
| City | 2025 Pop. ↓ |
|---|---|
| Derby | 264,430 |
| Dudley | 199,059 |
| Doncaster | 158,141 |
| Dundee | 147,710 |
| Dagenham | 108,368 |
| Darlington | 92,363 |
| Derry | 83,652 |
| Dartford | 56,694 |
| Dewsbury | 56,640 |
| Dunfermline | 54,640 |
| Dunstable | 51,973 |
| Durham | 47,785 |
| Dover | 41,709 |
| Dumfries | 33,290 |
| Darwen | 32,566 |
| Deeside | 32,000 |
| Deal | 30,555 |
| Didcot | 29,341 |
| Denton | 27,464 |
| Daventry | 23,879 |
| Droitwich | 23,834 |
| Droylsden | 23,689 |
| Dronfield | 21,124 |
| Dumbarton | 19,950 |
| Dinnington | 19,860 |
| Dukinfield | 19,306 |
| Devizes | 18,064 |
| Dalserf | 17,985 |
| Dorking | 17,747 |
| Dorchester | 16,879 |
| Darton | 15,259 |
| Darras Hall | 15,000 |
| Dursley | 14,992 |
| Didsbury | 14,292 |
| Dundonald | 13,985 |
| Driffield | 13,080 |
| Dalkeith | 12,720 |
| Dungannon | 11,935 |
| Dawlish | 11,312 |
| Downham Market | 10,884 |
| Diss | 10,734 |
| Desborough | 10,697 |
| Downpatrick | 10,507 |