If you would like to write to us, please send your correspondence to the address below:
Customer Service Team
Citibank UK Limited
PO Box 4012
Swindon
SN4 4JZ
Account servicing requests, such as paying in cheques, should be directed to the following address:
GCB Banking
Citibank UK Limited
PO Box 4012
Swindon
SN4 4JZ