Corsair Value Select memory - 1GB - SODIMM 200-pin - DDR II
Storage Capacity: 1 GB
Technology: DDR II SDRAM
Form Factor: SO-DIMM 200-pin
Memory Speed: 533 MHz (PC2-4200)
Manufacturer Warranty: Limited lifetime warranty
I've added a 2m Cross-over cable £0.66 inc VAT so that the total is above £30 for £10 Google Checkout discount. So you can have the 1GB RAM with a 2m Cross-over cable (to connect PC-PC without a network for example) for only £22.75.
I couldn't find a better deal anywhere, even at Ebay.