You’ve obviously never had to take any thing back to Scan. Their returns department leaves a lot to be desired. I won’t buy from them again.
dabs.com and insight.com are good online stores...just make sure you know what you are ordering, and that when it arrives you know it will work..thiis will save you from any returns hassle and cost. A good place in europe, which will of course ship to UK, is computeruniverse.net...prices are cheaper than UK, you should check them out too.