If you can't find your credit card, always report it missing immediately to both the credit card company and the police. (You'll need a police reference number for any insurance claims.)
Here is a list of the main credit card distribution agencies:- American Express: 01279 696 933
- Diners Club: 0870 1900 011
- Visa: 0800 891 725
- Mastercard: 0800 964 767
