Hi Jonathan.
I take your point about the bike shop. If I had thought about asking on this wonderous forum the first time it happened, I could have done it myself then. He never got the bike from the shop in Lichfield, he just went there as it is closer to where we live. The bike was originally purchased from an Evans Cycles outlet in the Chill Factor in Manchester. A bit far to take it back for repairs. Having said that, he has just had a fork seal replaced under the warranty.
Stuart