Of course Paul and Marjorie Abbatt lived in Bloomsbury! At 49 Tavistock Square. The range of their interests and their devotion to children's education and welfare is inspiring (details on the V and A site here). They were 'absolute idealists and so passionate about their their work that they keep their watches on Summer Time so that they're always in the shop by eight' (1963 profile). This was the shop in Wigmore Street in 1937.