Top tip (as told to me be an Evans Cycles bod). That green binder they give when you buy a bike from Evans, with the warranty stuff and user manual in it, should also have a spare hanger.I have exactly the same bike. Evans Cycles have the replacement hanger for about £10. Take off the old one and go to the shop with it just to check that the replacement is the right one. I made the decision not to buy the alignment tool. There's probably a DIY solution on YouTube somewhere.