Just called in to Currys in Halifax and found this Black and Decker electric screwdriver + 10 bits, 3 in 1 cable detector (stud, metal and live wire), carry case and all batteries reduced from £19.99 to £4.97. This may be a miss-price as they were previously £29.99, and are still at that price in Dixon's. The price is nationwide and are still available for home delivery.
Product code to search on : 217714
Alkaline screwdriver Forward and reverse action
3 in 1Multi sensor for stud, metal & AC live wire detection
Automatic spindle lock
4 x AA batteries
1 x 9 volt battery