(UPDATE: Looks like this is definitely national, but there is a similar Draper set still priced at £10 also around. Going by what people have said this set, if there are any, will be in the sale aisles not the tool aisle.)
Couldn't find my precision screwdrivers at the weekend and nearly bought a new set of no-name ones from Homebase for £7 or so - glad I held off because I spotted this set of screwdrivers in my local Asda in the "remains of the sale" aisle for £2.50. The drivers look pretty good, Draper is a reasonable brand, and it seems a pretty good way of getting a toolbox back up to spec after the screwdriver gnomes have whittled it down a bit.
As well as the precision screwdrivers and the standard drivers it's got a set of Torx bits, sockets, and so on. The Draper online catalogue is all Flash driven, so I've uploaded a screenshot of the catalogue entry in the third comment below.
Not done this much - well, once - hope this all comes through okay...