Thanks very much for your feedback.
I don't think I have ever bought a bike for myself before so the idea of trying on a few different bikes in a change room sounds like fun. Looking forward to doing more research.
Had some fun on Saturday asking loads of stupid questions and riding a few different bikes.
Rode a Trek, Giant, Specialized and Focus... all pretty similar spec. But was interesting to see how different a bike can feel with slightly different geometry. Quickly figured out that what is perfect for one just doesn't feel right for another.
Although I was a little suspect of one guys attempt at closing a sale... "as long as you look cool, it doesn't matter that you're uncomfortable". I think he was the work experience kid.
More research this weekend and hopefully the old Stack Hat will be dusted off and back in the game by Monday.