Was in robert dyas this morning and noticed they have Osram dimmable energy saving bulbs for 99p each.
Normally sell for £10-£20 each I think.
* 20w (= 100w equivalent)
* Smooth dimmable 7%-100%
* 15,000 hour life
Box says it can be used with "most" incandescent 60W-500W dimmer switches, would have bought one to try it out but I don't have any dimmers any more!
Might be worth reading the box and buying one or two to test out first as appparently they can be fussy about dimmer switches. I didn't think it was even possible to get CFLs that worked on a standard dimmer.
They also had loads of standard CFLs, both Philips and Osram (Osram ones are harder to find cheap), all wattages, 10p-15p a bulb.