Just bought an Extension Lead on a reel from Morrisons. Marked at £10 but on offer for £6. 18 metres of cable, Full 13 Amp rating. 4 Sockets with safety thermal cut out. You should use it with the cable unwound to prevent it overheating, but this is standard practice for all such reels. Seems like a good price.Morrisons branded so expect it to be available throughout their stores. Not sure if available online.