Political organisations
P
| Name | Type | Notes |
|---|---|---|
| Palestine Jewish Colonisation Association | Pressure group | |
| Papermakers' Association | Trade group | |
| Parliamentary Peace Aims Group | Peace movement | |
| Pattern Makers Co | Miscellaneous | |
| Peace Pledge Union | Peace movement | PPU |
| Peace Society | Peace movement | |
| Peoples Suffrage Federation | Pressure group | |
| PGB-Clyde Workers Committee | Pressure group | |
| Pharmaceutical Society | Trade group | |
| Plebs League | Pressure group | |
| Policy Exchange | Think tank | |
| Political and Economic Planning | Pressure group | PEP |
| Political Union | Pressure group | |
| Poor Law Union | Pressure group | |
| Port of London Authority | Miscellaneous | |
| Post Office Users National Council | Pressure group | |
| Poultry Association of Great Britain | Miscellaneous | |
| Press Association | Trade group | |
| Pressure for Economic and Social Toryism | Party group | PEST |
| Primrose League | Miscellaneous |