I took my bike to one of the major road bike shops in Edinburgh recently for some work. The shop called and claimed that the fork had welded itself into the frame and needed to be cut out. I was suspicious and decided to take it back to the shop who sold me the frame. The original shop, separated fork from frame with no effort at all in front of me. It needed a new headset. Needless to say, I will not use that Edinburgh dealer again. He also managed to lose a titanium skewer and has not replaced it.
There are dodgy shops in addition to Halfords.
There are dodgy shops in addition to Halfords.