| Code | Name | Region |
|---|---|---|
| GBPNL | Ponteland | NBL |
| GBPNT | Pontllanfraith | CAY |
| GBPTI | Pontrilas | HRT |
| GBPNC | Pontyclun | RCT |
| GBPTP | Pontypool | TOF |
| GBPNY | Pontypridd | RCT |
| GBPI7 | Pitney | SOM |
| GBPIS | Pitscottie | FIF |
| GBXPT | Pitsea | ESS |
| GBPT2 | Pitstone | BKM |
| GBPWM | Pittenweem | FIF |
| GBPLW | Plaistow | WSX |
| GBPXT | Plaxtol | KEN |
| GBSSE | Pleasley | NTT |
| GBPHY | Pleshey | ESS |
| GBPLO | Plockton | HLD |
| GBPW5 | Plowden | SHR |
| GBPKY | Pluckley | KEN |
| GBPMG | Plumpton Green | ESX |
| GBPLM | Plumstead | LND |
| GBPLY | Plymouth | |
| GBPMT | Plympton | |
| GBPKL | Pocklington | ERY |
| GBPDG | Podington | BDF |
| GBPOI | Point, Island Of Lismore | AGB |
| GBPOL | Polebrook | NTH |
| GBPTA | Pettinain | SLK |
| GBPEX | Pettistree | SFK |
| GBPTC | Pettycur | FIF |
| GBPTO | Petworth | WSX |
| GBPES | Pevensey | ESX |
| GBPWS | Pewsey | WIL |
| GBPKR | Pickering | NYK |
| GBPCL | Pickhill | NYK |
| GBPDE | Pidley | CAM |
| GBRCE | Piercebridge | DAL |
| GBPIE | Pierowall, Westray | ORK |
| GBPIL | Pilling | LAN |
| GBPBK | Pinchbeck | LIN |
| GBPHO | Pinhoe | DEV |
| GBPIN | Pinner | HRW |
| GBXPI | Pinxton | DBY |
| GBPPG | Pipe Gate | SHR |
| GBPBI | Pirbright | SRY |
| GBPMI | Pirnmill | NAY |
| GBPLC | Pitlochry | PKN |
| GBPNI | Pensilva | CON |
| GBPAE | Pentraeth | AGY |
| GBNTR | Pentre | RCT |
| GBPEF | Pentre Foelas | CWY |