Skirt about Belgium in taxi (7)
I believe the answer is:
minicab
'taxi' is the definition.
(I've seen this before)
'skirt about belgium' is the wordplay.
'skirt' becomes 'mini' (a mini skirt).
'about' becomes 'ca' (short for circa).
'belgium' becomes 'B' (abbreviation for Belgium).
'mini'+'ca'+'b'='MINICAB'
'in' is the link.
(Other definitions for minicab that I've seen before include "Car used as taxi" , "Hired vehicle" , "Type of taxi" , "Metered vehicle for hire" , "Type of car hire" .)