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On the sign:
ENGLISH HERITAGE
SIR HENRY WELLCOME 1853-1936 Pharmacist Founder of the Wellcome Trust and Foundation lived here
The English Heritage Trust is a charity that cares for over 400 historical buildings, monuments and other places.
The sign is in the house where the American-British entrepreneur who founded the pharmaceutical company Burroughs Wellcome, which is now the pharmaceutical giant GlaxoSmithKline, lived.