Not sure if this is nationwide, but been to Tesco Stockport tonight and they had final clearance on shoes and other bits, but they had shoes from 75p, I think the most expensive final clearance shoes were about £4.50.
Loads of sizes and styles left at about 9pm.
I bought myself 12 pairs, some to put away for my hols next year, cost me about £20. Shame I didn't know about this 2 days ago when I spent £20 on 1 pair of shoes at office!!