I would agree with the rest.
Also night flying is a pain in the UK. No doud't you will be going of to do some hour building in the states, do the training over there it is alot more pleasant cheaper and safer than doing it in the UK. You only have to do the ICAO training for night you don't have to have it issued for the IR.
You better check that though things might have changed since I went through they system. Personally I did it as part of my 45 hours PPL.
All instructors at the moment are on a maximise their income operation. They and the school just want your money.