Very good price for the kit you get, there is a 600D coming out soon but that is exactly the same specs except it has a swivel LCD, but under the hood there is no major change...
If you hate Dixons, then try http://www.procamerashop.co.uk/product/Canon_EOS_550D_Digital_SLR_18-55mm_IS_Kit_35197
at 578GBP, slightly cheaper but had no experience purchasing with them.
or Amazon has it for 604GBP, (https://www.amazon.co.uk/Canon-Digital-Camera-18-55-3-5-5-6/dp/B0037KM0F8/ref=sr_1_1?ie=UTF8&qid=1298125321&sr=8-1)
Either way great deals for this set...
The Canon EOS 550D Digital SLR Camera + EF-S 18-55mm Zoom Lens offers a level of functionality which is sure to help you and your photography grow!
Some of the highlights of this great-value 18 mp camera and lens include an advanced iFCL metering System with a 63-zone dual-metering sensor, Full HD video recording with manual control and selectable frame rates, a Quick Control screen, and continuous 3.7 fps shooting.