| League of Nations Society |
Pressure/campaign organisations |
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| League of Nations Union |
International organisations |
Formed on 13 October 1918 by the merger of the League of Free Nations Association and the League of Nations Society. |
| Leasehold Enfranchisement Association |
Pressure/campaign organisations |
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| Leather Producers Association |
Pressure/campaign organisations |
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| Legal Education Association |
Pressure/campaign organisations |
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| Liberal and Radical Association |
Party-affiliated organisations |
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| Liberal Association |
Party-affiliated organisations |
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| Liberal Churchmen's Union |
Religious organisations |
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| Liberal Federation |
Party-affiliated organisations |
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| Liberal National Party EC |
Party-affiliated organisations |
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| Liberal Radical Candidates Association |
Party-affiliated organisations |
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| Liberal Unionist Federation |
Party-affiliated organisations |
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| Liberal Union of Ireland |
Party-affiliated organisations |
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| Liberation Society |
Religious organisations |
a.k.a. Society for the Liberation of Religion from State-Patronage and Control |
| Liberty |
Pressure/campaign organisations |
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| Lib Unionist Association |
Party-affiliated organisations |
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| Lincolnshire and Norfolk Small Holdings Association |
Miscellaneous |
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| Liverpool Shipowners Society |
Miscellaneous |
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| Liverpool Steamship Owners Association |
Pressure/campaign organisations |
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| Local Conservative Association |
Party-affiliated organisations |
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| Local Government Association |
Miscellaneous |
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| Local Government Association of Northern Ireland |
Miscellaneous |
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| London Chemists Association |
Miscellaneous |
|
| London General Shipowners Association |
Miscellaneous |
|
| London Liberal Federation |
Party-affiliated organisations |
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