Thanks everybody for your advice. Meanwhile I have decided that I want a Flying V type guitar.
So I went to PMT in Birmingham - worst store ever. They never have what I am looking for.
Fairdealmusic is much betterl, they have great guitars IMO, but no Gibsons.
I really want to try the classic Gibson V, it seems to be what I want; the nut is aprox. 43mm, the neck profile is a bit rounded and not superflat and the neck is thin but still ok.
However, the only V I found in stores here were some hideous Dean thingies and some semi-goodlooking ESP/LTD ones.