How many credits do you get for about £20 (Sterling)?

around 20 I think

atleast 22% then however many more because of how the exchange rate works out

22 British pounds sterling = 35.8842 US dollars

according to google's conversion thing. So $35 = 35 credits + bonus

20 British pounds = 32.574 U.S. dollars (that's roughly right)

Plus the 15% additional bonus makes it around 37.46 credits :)

20 British pounds sterling = 32.6220 US dollars

Sorry, not sure why I did 22 :p

but same applies... $1 = 1 credit

If you are planning on buying them with paypal or with a card whn you select an amount. i.e $35 when you go through, before you pay a screen will load telling you how much that is in good ol english monies ^^