I was thinking of going for the AMEX SPG here in the UK as well. Quidco used to give £45 cashback for it but its no longer on quidco.

It has a £75 annual fee.

The first year is free + 15000 points if you spend more than £1000 per month(can be converted to 15000 skywards miles).

http://www.americanexpress.com/uk/st...t-credit-card/