I'll try him when I have to. I've emailed him and he's asked for
pictures. Got to get a new USB cable for my camera first, but
I've written to Derek asking about tires and the rear reflector, but
I haven't heard back from him yet.
When I first asked him about what to look for, he sent me a very
detailed list of locations to look for wear and what weaknesses to
be on the lookout for. Seemed like a very nice guy.

He's the one with the broadstone.freeserve.co.uk website.