Politicians north of the border taking a break (4)
I believe the answer is:
snap
'break' is the definition.
(snapping is a kind of breaking)
'politicians north of the border taking a' is the wordplay.
'politicians north of the border' becomes 'SNP' (Scottish National Party).
'taking' indicates putting letters inside.
'snp' going around 'a' is 'SNAP'.
(Other definitions for snap that I've seen before include "Family helper" , "Ginger biscuit" , "give way" , "Card game for children" , "21 [PHOTO]" .)