G Block formed part of the Government Code and Cipher School at Bletchley Park. It was constructed in October 1943 as an extension to F Block and D Block. The single storey spurs to the west housed the ISK and ISOS sections which dealt with the decoding of Enigma and conventional cipher messages from the German secret service. These sections played a vital role in the monitoring of the reciept of false information about the plans for D Day fed by allied intelligence to the German high command.
The two-storey U-shaped block to the east housed SIXTA, the Army traffic analysis sections, which dealt with the direction of radio-intercept stations and anaylsis of the enemy radio traffic. These sections played a vital role in the interception of the Enigma messages.
After the departure of the Government Code and Cipher School in 1946 the building was used as a training school for the Post Office and then British Telecom. British Telecom left the site in 1993, since that time the buildings have been left to decay. The buildings are pretty empty and similar, but its a great shame to see something so important being left in such a state.
Exterior by Goldie87, on Flickr
Stairway by Goldie87, on Flickr
Pillars by Goldie87, on Flickr
Bletchley by Goldie87, on Flickr
Untitled by Goldie87, on Flickr
Corridor by Goldie87, on Flickr
Sunlight by Goldie87, on Flickr
Post Office by Goldie87, on Flickr
The two-storey U-shaped block to the east housed SIXTA, the Army traffic analysis sections, which dealt with the direction of radio-intercept stations and anaylsis of the enemy radio traffic. These sections played a vital role in the interception of the Enigma messages.
After the departure of the Government Code and Cipher School in 1946 the building was used as a training school for the Post Office and then British Telecom. British Telecom left the site in 1993, since that time the buildings have been left to decay. The buildings are pretty empty and similar, but its a great shame to see something so important being left in such a state.
Exterior by Goldie87, on Flickr
Stairway by Goldie87, on Flickr
Pillars by Goldie87, on Flickr
Bletchley by Goldie87, on Flickr
Untitled by Goldie87, on Flickr
Corridor by Goldie87, on Flickr
Sunlight by Goldie87, on Flickr
Post Office by Goldie87, on Flickr