tsr’s in this country have campagnolo gears,only problem ive had with mine has been the carbon seat post and brooks saddle,the seatpost clamp is not strong enough and kept moving so changed from an American Thompson double bolted post with a union jack design,the saddle was a brooks swift which was to short for me so changed for a brooks professional,another part of the tsr that I believe is british is the stronglight crankset,im not sure about the stem but seems to be a moulton design,so a lot of the bike is british,frame,saddle,cranks,and stem,wheels are Italian,tyres are german,gears are Italian,no Japanese parts,so its a very European bike.