GlobalTestMarket is a fantastic survey site with regular, high paying surveys.

I receive 4 or 5 emails every day from GlobalTestMarket informing me of new surveys. Each survey I qualify for and complete successfully rewards me in MarketPoints. Most surveys credit around 30 MarketPoints. You can redeem your points for paypal cash when you hit 1,000 MarketPoints. 182 points is currently equal to £5 cash. Paypal payments usually take 5-10 working days to hit your paypal account. Alternatively you can redeem for various vouchers which work out at slightly higher £/point, here are just a few:

When you’re screened out of a survey (which happens when you don’t meet the specific criteria), you are credited with sweepstakes entries instead. There are four prize draws during the year with prizes awarded in MarketPoints: