Direct Marketing Association

http://www.dma.org.uk 

Direct Mail Information Service

http://www.dmis.co.uk

Institute of Direct Marketing

http://www.theidm.com/

Information Commissioner

http://www.dataprotection.gov.uk

Telephone Preference Service & Corporate Telephone Preference Service

http://www.tpsonline.org.uk/tps/

Mailing Preference Service

http://www.mpsonline.org.uk/mpsr/

Baby Mailing Preference Service

http://www.mpsonline.org.uk/bmpsr/

Facimile Preference Service

http://www.mpsonline.org.uk/fps/

Business Credit Check - Search for a Company 

Directories:

FreeIndex - Business Directory UK

Business to Business Directory – Online B2B directory for the UK

Orbitlinks