Jacob ____'s two sculptures for the former London Underground offices at 55 Broadway caused public outrage in 1929 (7)
I believe the answer is:
epstein
(Other definitions for epstein that I've seen before include "old artist" , "Sir Jacob ..., sculptor noted for his statues of the famous" , "Brian --, Beatles manager" , "American-born British sculptor, d. 1959" , "Sir Jacob --, US-born British sculptor" .)