We use TransUnion, Experian and Equifax as our Credit Reference Agencies. Here's how to contact them:
TransUnion International UK Limited
One Park Lane
Leeds
West Yorkshire
L53 1EP
www.transunion.co.uk
Experian
Consumer Help Service
PO Box 9000
Nottingham
NG80 7WP
www.experian.co.uk
Equifax
Customer Service Centre
PO BOX 10036
Leicester
LE3 4FS
www.equifax.co.uk