20 Frognal Way / NW3

Architects believed to have been Tomkins Hamer & Ley with R J Page, commissioned by Dame Gracie Fields, completed 1934. Not to be confused with another Fields' residence, 'Tower', that was on the Bishops Avenue. This one, aka 'Blue Tiles', is on Frognal Way, Hampstead, London Borough of Camden. 

(CC BY-NC-SA 2.0 - attribute: Photo by George Rex, non-commercial, share-alike.)