B&Q currently have a selection of LED lights half price such as:
240 Multifunction LED White Light Set down from £39.99 to £19.99
80 Multifunction LED Multicoloured Light Set down from £14.99 to £7.49
I'm not sure whether they are worth their original price but the reduced prices seem to be the some of the cheapest prices around at the moment. Not sure when the deal finishes.