British actor is keeping working after bit of resting (5)
I believe the answer is:
irons
'british actor' is the definition.
(I've seen this before)
'is keeping working after bit of resting' is the wordplay.
'keeping' is an insertion indicator.
'working' becomes 'on' (on can mean working or activated).
'after' is a charade indicator (letters next to each other).
'bit of' indicates taking the first letters.
The initial letter of 'resting' is 'r'.
'on' put after 'r' is 'ron'.
'is' going around 'ron' is 'IRONS'.
(Other definitions for irons that I've seen before include "Devices restricting personal freedom in prisons" , "Metal-headed golfclubs" , "instruments of restraint" , "Don't have too many in the fire at the same time" , "Smooths the golfclubs?" .)