I bought one of the Tesco Acer Blueray laptops and was looking to extend the warranty on it. I found the Aceradvantage 2 year extended drop and collect warranty for £26 delivered. Although it's drop and collect I believe there are a large amount of drop in centres and if you aren't close you can always courier it in to get it fixed. Warranty covers parts and labour and is 2 years on top of the manufacturers warranty so giving 3 years in total. Worth the money even if it's only the PSU that dies.
Edit: £26 adds 1 more year not 2 years as detailed above. Still not bad though.
Be gentle this is my first post. Sorry couldn't get the picture to work.
Here's the direct link:http://www.acerdirect.co.uk/AcerAdvantage_Extended_Service_Agreement_-_2_year_-_carry-in_SV.WNBAF.E06/version.asp?PID=131