Sir, David Cameron should go to Bletchley Park (of Enigma code fame) to learn how to keep a secret (“Queen purred when I told her that Scotland voted ‘no’, says Cameron”, Sept 24). On a recent visit to Bletchley our guide told us that a few weeks previously an elderly couple touring the site had realised to their complete surprise that they had worked in the same hut, but on different shifts, at Bletchley during the war. Because they were subject to the Official Secrets Act they had never discussed with each other — nor with anyone else — what they did between 1939 and 1945. That is how to keep a secret Mr Cameron.
Roger Hart
Witham, Essex
Sir, David Cameron‘s apology