The next best Amex reward cards. Here are quick details of three alternatives. Platinum Cashback. - 5% cashback for first 3mths/max £125, then 0.75% cashback on up to £10,000 spent, then 1.25% cashback on £10,000+. - Cashback paid annually. - £25/yr fee. - Fail to repay fully and it's 30.7% rep APR incl fee.