Practical Cockney chap (4)
I believe the answer is:
andy
I believe this is a double definition.
'practical cockney' is the first definition.
('handy' - I've seen this in another clue - said with a cockney accent, dropping the 'H')
'chap' is the second definition.
(man's name)
(Other definitions for andy that I've seen before include "Tabloid cartoon character" , "- Pandy, children's TV series" , "strip cartoon character" , "Andrew (dim.)" , "Man" .)