B&Q in Bangor (NW Wales) currently has stacks of £1 items near the front door. These include lots of good price items including multipacks of sandpaper, half-sheet sander sheets, holesaws, drill packs, etc,
What caught my attention though was a good range of classic white (i.e. traditional square MK style) electrical fittings. These included switched double sockets, triple packs of 1 way light switches, double packs of 2 way light switches, immersion heater (fused) switches, 5 packs blanking plates, etc. All at £1 each. They are very similar to the standard B&Q range (and Sector, etc), but branded differently - and all labelled a £1 - i.e. not clearance of main stock. Have bought a few and the quality seems perfectly good..... These are a cracking price if you are doing a rewire.