Just picked up a set of glass digital bathroom scales at Morrisons. They are branded as Modern Home, i suspect this is an own brand by Morrisons, but they seam to be extremely good quality for the money. These were £20, then £9.99 now £4.89
You can change between stone, Lbs, and Kg and have an auto on/off feature.
Not bad for under a fiver. I had been looking for a cheap set of digital ones and the cheapest i could find were the £12.99 ones from Lloyds somebody posted a few days back.