Political organisations
| Name | Type | Notes |
|---|---|---|
| ESO | check name and type | |
| European Association of India | Miscellaneous | |
| European Movement | Pressure group | |
| Evicted Tenants' Association | Pressure group | |
| E&W Ridings Reg Board for Industry | Pressure group | |
| Fabian Society | Pressure group | |
| Family Endowment Society | Miscellaneous | |
| Fawcett Association | Miscellaneous | |
| Federal Union | International body | |
| Federation of British Industry | Trade group | |
| Federation of Conservative Students | Party group | |
| Federation of Master Builders | Miscellaneous | |
| Federation of Master Printers | Trade group | |
| Fight the Famine Council | Pressure group | |
| Film Producers Association | Pressure group | |
| Forester | Miscellaneous | |
| Foundation for Age Research | Miscellaneous | |
| Free Church Assembly | Miscellaneous | |
| Free Church Brotherhood | Religious | |
| Freedom Association | Pressure group |