R. H. Tawney 1880-1962 economic historian, Christian Socialist and founding father of the welfare state lived here

John Yugin on Wikimedia Commons
This is an approximate position

21–30 Parliament Hill Mansions, Lissenden Gardens, NW5, London
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by Lissenden Gardens Tenants Association

Colour: blue

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See also...
Spudgun67 on Wikimedia Commons