Be very wary of the SURVEYS thing you guys....most of them are just gathering your information so they can send you THEIR advertising on THEIR business or to trick you into signing up for other goods and services and subscriptions! And...your inbox will fill up with junk in a matter of hours. Been there and done that. Be VERY careful what information you put out there for them.
Thanks for the warning Lovesdubs - if I do decide to go ahead, I'll set up a specific email address for that purpose only I've heard about companies which don't pay, or only pay when you've earned a certain level - which they make sure you either take a long time to or never attain. There is one site I've heard about however, which pays monthly regardless of earnings, I think it's based in Germany but they do UK surveys.
I have just signed up for a 'cashback' site - so if you click on their affiliate links, you get points which can be redeemed for shopping vouchers - its a well-established site recommended on a thoroughly reputable site which has loads of money-saving tips. It'll be good for me as I do a lot of Amazon shopping and now I can get paid for it