| 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 |
|
| Society of Individualists |
Miscellaneous |
|
| Society of Labour Candidates |
Party-affiliated organisations |
|
| Society of Labour Lawyers |
Party-affiliated organisations |
|
| Society of Newspaper Proprietors |
Professional/trade organisations |
|
| Sound Currency Association |
Pressure/campaign organisations |
|
| South African Association |
Pressure/campaign organisations |
|
| South African Union |
Miscellaneous |
|
| South Wales Regional Council of Labour |
Pressure/campaign organisations |
|
| Spanish Medical Aid Committee |
Miscellaneous |
|
| St Georges Society |
Miscellaneous |
|
| Stonewall |
Pressure/campaign organisations |
Pressure group campaigning for gay rights. |
| Sunday School Union |
Religious organisations |
|