Instructions:Free UK delivery* on orders over £50 - enter the promotional code FSCS25 when you reach the checkout. Discount code is valid until the 21st December 2007. *This offer applies to mainland UK deliveries only.
Don't forget 10% Quidco.
I've just bought the Intelliplug and trailing extension, which is on offer at the moment. 1st purchase yesterday and used free delivery code from an older posting. It applied to Royal Mail delivery which is normally £2.50, delivering Tues -- not bad at all. Other forms of shipping: eg. £8 for courier next day delivery or you can collect from their warehouse in Devon.
ps: I believe there's also a code for '£5 off £20 spend' posting somewhere on the forum, if you purchased less.