| Code | Name | Region |
|---|---|---|
| GBRIW | Ringwood | HAM |
| GBRPY | Ripley | DBY |
| GBRPE | Ripley | SRY |
| GBRIP | Ripon | NYK |
| GBRPP | Ripponden | CLD |
| GBRY9 | Risby | SFK |
| GBRSC | Risca | CAY |
| GBRSE | Riseley | WBK |
| GBRHT | Rishton | LAN |
| GBRIL | Risley | DBY |
| GBRIS | Risley | LAN |
| GBRRD | River Dart | DEV |
| GBRVF | River Fowey | CON |
| GBDND | Riverside Park Apt/dundee | DND |
| GBRXN | Rixton | WRT |
| GBANO | Road Town | |
| GBRMO | Rhosesmor | FLN |
| GBRGC | Rhos-goch | POW |
| GBRNE | Rhosneigr | AGY |
| GBRHS | Rhos-on-sea | CWY |
| GBRHU | Rhu | AGB |
| GBRCB | Rhu Coigach - Badluachrach | HLD |
| GBRHB | Rhubodach, Isle Of Bute | AGB |
| GBRYM | Rhydymwyn | FLN |
| GBRHY | Rhyl | DEN |
| GBRYY | Rhymney | CAY |
| GBRYI | Rhynie | ABD |
| GBRBT | Ribbleton | LAN |
| GBIBC | Ribchester | LAN |
| GBRCL | Riccall | NYK |
| GBRIC | Richborough | KEN |
| GBRCH | Richmond | NYK |
| GBRCU | Richmond Upon Thames | RIC |
| GBRKW | Rickmansworth | HRT |
| GBRDG | Riddings | DBY |
| GBRDM | Ridgmont | CBF |
| GBREL | Rednal | BIR |
| GBRAL | Rednal | SHR |
| GBRRU | Redruth | CON |
| GBREM | Reedham | NFK |
| GBRPH | Reepham | |
| GBRGP | Regent's Park | WSM |
| GBRGT | Reigate | SRY |
| GBREJ | Rejerrah | CON |
| GBRMH | Remenham | WOK |
| GBRHM | Rendlesham | SFK |
| GBREN | Renfrew | RFW |
| GBRFO | Retford | NTT |
| GBRTO | Rettendon | ESS |
| GBRYO | Reydon | SFK |