Royal Mail Technical
- Gives various forms of technical assistance to users of Mailsort, Presstream and Walksort.
- http://www.mailsorttechnical.com/

The British Postal Museum & Archive
- Visitor information, details of collections and exhibitions, online catalogue, and educational resources. Located in Camden.
- http://www.postalheritage.org.uk/

Royal Mail
- Corporate information, online sales of stamps and envelopes, tools including post-code finder and postal rates calculator. Also advice on direct marketing and stamp collecting.
- http://www.royalmail.com

Guardian Unlimited Special Reports - Postal Service
- News and analysis continuing coverage includes official documents and related links.
- http://www.guardian.co.uk/post/0,11489,629529,00.html

Royal Mail Group
- Umbrella group for Royal Mail, Post Office and Parcel Force. Includes 'about us' section, with details of community initiatives and recruitment.
- http://www.royalmailgroup.com/

Postwatch
- Independent watchdog for postal services in the United Kingdom, providing advice to Government and working with customers to promote a better postal service.
- http://www.postwatch.co.uk/

Post Office
- Full details of the services available, including banking, foreign exchange, licences of all kinds and passports. Local post-office finder.
- http://www.postoffice.co.uk