| Scottish Temperance League |
Pressure/campaign organisations |
|
| Scottish Trades Union Congress |
Miscellaneous |
|
| Scottish Unionist Association |
Party-affiliated organisations |
|
| Secondary Schools Association |
Miscellaneous |
|
| Selsdon Group |
Party-affiliated organisations |
|
| Shaftesbury Society |
Pressure/campaign organisations |
|
| Shelter |
Pressure/campaign organisations |
|
| Shipbuilding Employers Federation |
Pressure/campaign organisations |
|
| Shipowners International Association |
Miscellaneous |
|
| Showmens' Guild |
Miscellaneous |
|
| Small Business Bureau |
Pressure/campaign organisations |
|
| Smoke Abatement League |
Pressure/campaign organisations |
|
| Socalist League |
Party-affiliated organisations |
|
| Social and Political Education League |
Pressure/campaign organisations |
|
| Socialist Christian League |
Party-affiliated organisations |
|
| Socialist Educational Association |
Pressure/campaign organisations |
|
| Socialist Environment and Research Association |
Pressure/campaign organisations |
|
| Socialist International |
Pressure/campaign organisations |
|
| Socialist Medical Association |
Party-affiliated organisations |
|
| Society for Promoting the Religious Principles of the Reformation |
Religious organisations |
|
| Society of Black Lawyers |
Pressure/campaign organisations |
|
| Society of Chemical Industry |
Miscellaneous |
|
| Society of Commercial Accountants |
Miscellaneous |
|
| Society of Conservative Lawyers |
Party-affiliated organisations |
|
| Society of Friends |
Religious organisations |
|