Triumph Motorcycles have six factories. Two of these factories are based in Hinckley in the UK, three are in Chonburi, Thailand and one is n Manaus, Brazil. So, SOME Triumph motorbikes are made or at least assembled in the UK. A friend of mine has one and he is very happy with it. It is not clear how (or even if) you can tell where a particular Triumph bike was assembled and where the parts were made. The original Triumph factory closed down in 1983. As far as I know Triumph motorcycles is unconnected to the German bra making company Triumph International.