London lad (4)
I believe the answer is:
chap
'london lad' 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 "Become sore; fellow" , "(Of skin) become sore" , "Man, boy, fellow" , "Cracked patch (of skin) - gentleman" , "Fish" .)