Catch British film maker (5)
I believe the answer is:
loach
This clue is a double definition.
'catch' is the first definition.
(type of fish)
'british film maker' is the second definition.
(Ken Loach)
(Other definitions for loach that I've seen before include "Fish - British film director" , "Film-maker" , "Freshwater fish; rhymes with freshwater fish" , "Fish with barbels around mouth" , "River fish - film director" .)