SuitsYou in Clarks Village (opposite Gap) are closing down and they have suits from £10. Not much left in the cheaper range, but I did notice that there were loads of £100+ suits left (reduced from £500+).
I also noticed that the sales people were very keen to do a deal so definitely worth negotiating on the sticker price. I bought 2 linen shirts for £14 (down from £70 for the 2). They also had fittings and hangers for sale if anybody needs shop fittings!