I recently received a new replacement Amex CC from MBNA.
To my suprise the covering letter says i will earn 1% cashback on all purchases over £0.99.
Terms and conditions say the cashback will be credited to my CC account once a year in January.
The only limitation appears to be that its an Amex. Suprise as MBNA got rid of their cashback card a year or so ago and and other CC are either withdrawing cashback or reducing the percentage.