n/a

We do, but they're the lightweight kind that cost nearly twice as much (£8.50)

We however nowstock valve extension that allow you to buy normal valve instead, which is much more useful.

I was in there a couple of weeks ago to buy an rear fixed wheel, they didn't have any but were friendly enough.

We tend not to stock those as there's very little demand beside hybrid and road wheelset, we usually order them in if necessary, Raleigh have a reasonably priced one that come with a decent sized lockring and 3/32 fixed cog for £60.