New server build in progress June 2024. Main pages are now on Lightstraw UK. Mostly the same URLs but without the 'co.'
Light Straw ATE
Enter the world of operator connected calls, Subscriber Trunk Dialling, Strowger switching and much more...
Visit the Post Office Tower; the Telephone Managers' Office; explore the Telecoms Engineering Centre; and learn about the last two TXE4s to be taken out of service.
Includes GPO Clock Systems.
GPO Clock Systems...
Simon Taylor collates all of the available documentation and surviving diagrams.
GPO History
Here we look at the GPO, Royal Mail, Post Office Savings Bank, ERNIE, National Giro and more...
Includes GPO vehicle history.
Telecoms at Bletchley Park
The GPO's expertise from its research department at Dollis Hill was invaluable in assisting Bletchley Park to develop robust, electro-mechanical machines which could be used to break the wartime codes.
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