From their FAQ (http://experian.metafaq.com/help/CreditExpertBRS/Cancel_and_duration/CancelBRS):
To cancel your membership please call us on free phone 0800 561 0083 (Monday – Friday 9am until 6pm and Saturday 9am until 1pm).
URLS:
http://creditexpert.co.uk
Customer helpline phone number is +1 8OO 648 162O
Toll free helpline phone number is__ +1866 94O OOO5/”’