Catalogue description Department of Trade and Industry and predecessors: Telecommunications and Post Division and predecessors: Registered Files (OSB Series)

This series contains the files of the Telecommunications Division of the Ministry of Posts and Telecommunications and, through re-registration, files inherited from the External Telecommunications Executive of the Post Office. The files relate mainly to the Commonwealth Telecommunications Conference of 1965 to 1966.

The OSB series was first raised by the Ministry of Posts and Telecommunications. Early files in this series were inherited from the External Telecommunications Executive of the GPO and re-registered into the OSB series.

Further files were added to the series by the Telecommunications Division of the Ministry, and subsequently by its successors, the Department of Industry and the Department of Trade and Industry. The files that the Department of Industry raised in this series were for the use of its Posts and Telecommunications Division. In 1983, when the Department of Trade and Industry was set up, the series continued in its Telecommunications Division.

For other GPO files inherited by the Department of Trade and Industry and its predecessors, including files relating to Commonwealth telecommunications affairs. For files inherited by the Home Office from the GPO and its successor, the Ministry of Posts and Telecommunications, see: Further telecommunications records are in:

The Post Office's External Telecommunications Executive continued to raise files until 1979 at the least, though not in the OSB prefix. These files are held by the BT Archives and can be seen in POST

TCB

TCC

TCD

TCK

Ministry of Posts and Telecommunications files in BT 229

HO 255

HO 256

HO 257

HO 258

General Post Office, 1660-1969

Ministry of Posts and Telecommunications, 1969-1974

From 1993 Department of Trade and Industry