If you wish to complain about the treatment you have received at any of the United Kingdom's sea, air or rail ports, or about immigration controls at a United Kingdom port, you should contact the Border Force Customer Service Unit.
Phone:  01304 664511
Fax:  01304 664459
Email:  complaints.immig@hmrc.gsi.gov.uk
Address:  Border Force CSU, Building 25, Priory Court, St Johns Road, Dover CT17 9SH