Next cheapest with a little searching from a UK store is £799.00 from Jessops.

The kit lens bundles of 17-85mm IS USM and 18-200mm IS are also available at RGB:

£999.99 - Canon EOS 50D Lens Kit (EF-S 17-85 IS USM)
http://www.rgb-tech.co.uk/product/1671

£1089.99 - Canon EOS 50D Lens Kit 2 (EF-S 1 more...

Here's what you get if you collect the above in store at Jessops:
Canon EOS 50D SLR
Canon EF-S 18-200mm f3.5-5.6 IS Lens
Sandisk 8GB Cruzer Micro USB Flash Drive
Sandisk Extreme III 8GB CompactFlash
£75 voucher to be used in-store against Canon products.

The CompactFlash card is actually changeable more...