British territory without distinctive characteristics (5)
I believe the answer is:
bland
'without distinctive characteristics' is the definition.
(I've seen this before)
'british territory' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in BBC).
'territory' becomes 'land' (land is a kind of territory).
'b'+'land'='BLAND'
(Other definitions for bland that I've seen before include "Insipid, vapid" , "Without flavour" , "Flavourless" , "Mild; dull" , "without distinctive characteristics" .)