| Code | Name | Region |
|---|---|---|
| GBDBP | Dibden Purlieu | HAM |
| GBDID | Didcot | OXF |
| GBDHN | Dilhorne | STS |
| GBDIN | Dingle | LIV |
| GBDIW | Dingwall | HLD |
| GBDRT | Dinnington | ROT |
| GBDIO | Dinton | WIL |
| GBDIH | Dishig | AGB |
| GBDSL | Disley | SKP |
| GBDIS | Diss | NFK |
| GBUBA | Distington | CMA |
| GBDIT | Ditchingham | NFK |
| GBDTH | Ditchling | ESX |
| GBDTT | Ditton | KEN |
| GBXDT | Ditton Priors | SHR |
| GBAG2 | Doagh | ANT |
| GBDME | Denmead | HAM |
| GBDNY | Denny | FAL |
| GBDSO | Densole | KEN |
| GBDET | Denton | ESX |
| GBDNN | Denton | NFK |
| GBDEN | Denton | TAM |
| GBDNV | Denver | NFK |
| GBDEP | Deptford | LEW |
| GBDXY | Derby | DBY |
| GBDBS | Derbyshire | DBY |
| GBDER | Dereham | NFK |
| GBRRY | Derry | DRY |
| GBDR9 | Derrybeg | SCB |
| GBDYL | Derrylin | FER |
| GBDSA | Dersingham | NFK |
| GBDVI | Dervaig | AGB |
| GBDSB | Desborough | NTH |
| GBDES | Desford | FLN |
| GBDTI | Detling | KEN |
| GBDVZ | Devizes | WIL |
| GBDHG | Deanshanger | NTH |
| GBDBD | Debden | ESS |
| GBDBN | Debenham | SFK |
| GBDMT | Dechmont | WLN |
| GBDDO | Deddington | OXF |
| GBDPC | Deepcut | SRY |
| GBDGJ | Deeping Saint James | LIN |
| GBDSQ | Deeping St Nicholas | LIN |
| GBEER | Deerness | ORK |
| GBDSE | Deeside | CHW |
| GBXFF | Defford | WOR |
| GBDEI | Deighton | YOR |
| GBDEA | Delabole | CON |
| GBDEL | Delph | OLD |