Clubs
| Name | Short name | Club type |
|---|---|---|
| Junior United Service Club | Junior United Service | Social |
| Junior University Club | Junior University | Social |
| Kandahar Club | Kandahar | Social |
| Kennel Club | Kennel | Social |
| Kildare Street Club, Dublin | Kildare Street, Dublin | Social |
| Kinsmen Club | Kinsmen | Social |
| Knights of the Round Table | Knights of Round Table | Social |
| Labour Party Club | Labour Party | Political |
| Ladies' Carlton Club | Ladies Carlton | Social |
| Lansdowne Club | Lansdowne | Social |
| Law Club | Law | Social |
| Leander Club | Leander | Social |
| Leicestershire Club | Leicestershire | Social |
| Leinster Club | Leinster | Social |
| Liberal Club, Edinburgh | Liberal, Edinburgh | Political |
| Lighthouse Club | Lighthouse | Social |
| London University Club | London University | Social |
| Lyric Club | Lyric | Social |
| Magistrates' Club | Magistrates' | Social |
| Manchester Liberal Club | Manchester Liberal | Political |
| Manchester Union Club | Manchester Union | Social |
| Marlborough Club | Marlborough | Social |
| Marylebone Cricket Club | MCC | Social |
| Mensa | Social | |
| National Club | National | Political |