As you can see there are few suggestions, but you, dear, dear Reader, can change that. Email me with a bookshops or record store and I will put it here. Then, when I finally get to visit I will write a blog post about it.
Elvis Shakespeare, 347 Leith Walk, Edinburgh
Gosh! Comics, 1 Berwick Street, London
Five Leaves Bookshop, 14a Long Row, Nottingham (behind the Works)
Terminal Records, Riverside Market, Haverfordwest
Hay-On-Wye, a town full of bookshops, I think I visited most of them though not able to give a full write up (another trip me thinks). That said, Richard Booth's and The Poetry Bookshop were aces (especially The Poetry Bookshop for having a Richard Brautigan book for my collection)
Jenny at work suggested three shops in Sheffield, South Yorkshire for "a good day out". Jenny's recomendations are Record Collector on Fulwood Road, Books on the Park on Ecclesall Road, and The Last Chapter overlooking Endcliffe Park.
The Record Cafe, Bradford. Will write up a bit more as soon as I can though please sign up to support their planning permission application.