A quick search of old posts on here suggests Ford Granada Mk2, I think it's a very common caliper in its day used by Ford on various cars and other manufacturers, including Triumph, as well as TVR
Phillpot is correct. Ford Granada mk2 front calipers. The larger engined V8 Wedges used the large calipers and vented discs off the 2.8i car. Other models used the standard calipers, although pistons are same size on both.