Effigies in London hospital (4)
I believe the answer is:
guys
I believe this is a double definition.
'effigies' is the first definition.
'london hospital' is the second definition.
(Guy's Hospital is a London hospital)
'in' acts as a link.
(Other definitions for guys that I've seen before include "Chaps, lads" , "people generally" , "Tent ropes; people" , "Burn victims" , "Dolls' partners" .)