Contact the American Express (Amex) customer service team by telephone on their free UK telephone number 0800 917 8047. When you phone this Amex customer service number you will be greeted with automated instructions, you will be given an opportunity here to request a customer service representative.
Amex UK customer service number – 0800 917 8047
Contact Amex UK on 0800 917 8047 to speak to a customer service representative regarding your American Express account. For example you can phone Amex on this number to query a transaction on your American Express account.
You can also phone Amex UK to request an increase on your limit on an American Express account such as the Platinum Card.