Guardian Unlimited Special Reports - Postal Service: News and analysis continuing coverage includes official documents and related links.
Post Office: Full details of the services available, including banking, foreign exchange, licences of all kinds and passports. Local post-office finder.
Postwatch: Independent watchdog for postal services in the United Kingdom, providing advice to Government and working with customers to promote a better postal service.
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.
Royal Mail Group: Umbrella group for Royal Mail, Post Office and Parcel Force. Includes 'about us' section, with details of community initiatives and recruitment.