British survive explosion (5)
I believe the answer is:
blast
'explosion' is the definition.
(blast is a kind of explosion)
'british survive' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'survive' becomes 'last' (synonyms).
'b'+'last'='BLAST'
(Other definitions for blast that I've seen before include "Severe reprimand; strong gust" , "Shoot" , "Sudden, strong current of air" , "Severely criticise" , "Strong gust of air" .)