The Mini's roof begs to have a British flag on it! This kit is made of pieces of blue and red pre-cut vinyl. It was at one time a Rover accessory and was called "pop art design" because Rover was not allowed by law to use the true sovereign colours and impression. Intended to go on cars which have a white painted roof. Ref: DAF105120.
NOTE: professional installation recommended (tip: look for a local vehicle wrap business or sign shop that does vehicle graphics).