The British Postal Museum & Archive (BPMA) is the organisation responsible for the archives of the history of the British postal system.

The 1838 Public Records Act was the first step in organizing government archives, including the civil service department known then as ‘the Post Office’. This represents the beginnings of what is now The Royal Mail Archive. By 1896 a report concerning the maintenance of Post Office records had been produced and the first archivist was appointed. The Public Records Acts of 1958 and 1967 reinforced the need for the Post Office to keep, catalogue and make its archive records available.

In 1966, the first National Postal Museum (NPM) was established, in part due to the Phillips Collection of Victorian philately being donated to the nation by Reginald M. Phillips. The museum was opened by the Queen on 19 February 1969, at King Edward Building near St Paul’s Cathedral in London. A collection of postal equipment, uniforms, vehicles and much more was developed over the years; far more than could be displayed in the small museum.

In 1998, the King Edward Building was sold, and the NPM closed. The collections were retained and the management of the museum and archive was combined. This was known as the Heritage unit of the Post Office (then renamed Consignia, then Royal Mail Group).

Royal Mail Group decided to transfer the work of this heritage unit to an independent charitable trust, in light of the changing mail market and its own shift from public service to competitive business. This ‘Postal Heritage Trust’ came into being in April 2004, and was branded as The British Postal Museum & Archive.

Since 2004, the BPMA has expanded its work into providing a programme of events, exhibitions, education and web resources.