Many coming back from Bristol finally (4)
I believe the answer is:
lots
'many' is the definition.
(lots of something)
'back from bristol finally' is the wordplay.
'back' says the letters should be written backwards.
'from' says the answer is hidden in the clue.
'stol' can be found hidden inside 'bristol finally'.
'stol' in reverse letter order is 'LOTS'.
'coming' acts as a link.
(Other definitions for lots that I've seen before include "Tons" , "Large number or amount" , "Large numbers at auction" , "Oodles" , "Many found in slot" .)