American Express Services Ltd
Amex House, Department 871Edward StreetBrightonBN88 1AHContact:T:01273 689955Barclaycard Business - Customer Service Dept.
Barclaycard House1234 Pavilion DriveNorthamptonNN4 7SGDiners Club UK Ltd
PO Box 53SalfordManchesterM5 3BHMasterCard for Business - c/o Royal Bank of Scotland Group
Commercial Cards - 7th Floor2 1/2 Devonshire Square LondonEC2M 4BA