I find the site of MSN Money very useful for those who are concerned:

http://money.uk.msn.com/mortgages/default.aspx

I tried to use that a few weeks back when looking for a mortgage myself. Have to admit, I felt a little lost - it didn't come across as the most user-friendly site I've used. I'm sure the information's great, though, just that I've noticed with a few sites like these it feels like too much gets crammed in too quickly.

Just my 2c though.

yeah msn money is pretty sweet.