A Virtual Tour of Bletchley Park

by Tony Sale

page 2 of 5 pages illustrating
Bletchley Park and its Museum

Tony Sale's
Codes and Ciphers

Part 2: In the Stable Yard

9 & 10. These show the rather fine entrance to the Stable Yard. The wartime garages on the left now hold wartime fire engines belonging to the Fire Engine Trust.
11. Some of these horse loose boxes were converted to garages.

The one in the centre had to be extended for Cmdr. Denniston's Rover motor car.

12. This was originally the head groom's house.

13. This was the tack and feed house, converted just before the war to two cottages.

14. The apple and plum store was also converted to two flats before the war.

We now come to the most important cottage.
This is where Dilly Knox and John Jeffreys worked on the ideas for breaking Enigma that they had gained from the Poles at the famous meeting in the Pyry forest in Poland, 25 July 1939.
John Jeffreys set up a production line to make copies of the Polish 'Zygalski Sheets.' One set of these was taken by Alan Turing to Chateau Vignolles just outside Paris. The Polish mathematicians, Rozecki, Zygalski and Rejewski, had escaped there from Poland.

The first break back into Enigma occurred at Vignolles in January 1940 using the sheets Jeffreys took.

A few weeks later the German Air Force key, known as RED, was broken in the cottage. Immediately the cottage was quarantined to keep the breaking of Enigma absolutely secret.

16. The path leads from the stable yard back to the Mansion car park.

This Virtual Tour was conceived and written by Tony Sale to accompany his own photographs.

This page is the second of five parts.
Continue to Part 3.

For information about when Bletchley Park is open to visitors you must go to the Bletchley Park Trust which is responsible for it. This website has no connection with the Bletchley Park Trust.

This page was created by the late Tony Sale
the original curator of the Bletchley Park Museum
Technical assistance from Andrew Hodges