London fellow (4)
I believe the answer is:
chap
'london fellow' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for chap that I've seen before include "Fish" , "Cracked patch (of skin) - gentleman" , "we prefer not to have on hand" , "Man, boy, fellow" , "Fellow < makes > crack" .)