British pose and sunbathe (4)
I believe the answer is:
bask
'sunbathe' is the definition.
(I've seen this before)
'british pose' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'pose' becomes 'ask' (synonyms).
'b'+'ask'='BASK'
'and' is the link.
(Other definitions for bask that I've seen before include "Lie in warmth" , "revel" , "Sunbathe" , "Lie in the sun" , "Soak up sun" .)