It's said playing snooker is the Brits' forte? (8)
I believe the answer is:
queueing
'the brits' forte?' is the definition.
(British people stereotypically enjoy queueing)
'it's said playing snooker' is the wordplay.
'it's said' indicates a 'sounds like' (homophone) clue.
'playing snooker' becomes 'cueing' (using a snooker cue).
'cueing' sounds like 'QUEUEING'.
'is' is the link.
(Other definitions for queueing that I've seen before include "Waiting in line" , "Standing in line" .)