Revolver mainly in their market shop. Used to spend hours in there 'digging'
St Martins too. BPM was a good one, originally on Granby Street then Loseby Lane
Kembles in Wigston was one of the few you could places you could get reggae for many years. If you wanted to have a good reggae spend we often went to Camden (before it was hip)
Now its all online. Norman, Juno, Amazon, Boomkat and Bandcamp.