Police officer subject to ‘local management action’ after reporter from Police Review magazine discovers book at memorial event Scotland Yard has been called in after a personal diary belonging to Theresa May, the home secretary, was mislaid in a Glasgow concert hall. The Metropolitan police is investigating how the book was lost but a spokesman said May’s security had not been compromised. In fact the personal diary was found at the concert hall by a reporter from Police Review, a magazine for police officers, who was attending the same National Police Memorial Day event as the home secretary. Police Review – which is read by 140,000 officers – returned the diary, but not before copying information from within it. The weekly magazine said it would be publishing details of her diary entries in its issue due out on Friday. Reports coming out of Whitehall said the person responsible for mislaying the diary was May’s protection officer. A Scotland Yard spokeswoman later said: “Following an investigation, and as part of the MPS [Metropolitan police service] misconduct process, an officer has been subject to local management action. The officer has not been suspended.” Police Review said the diary included details of when May would be working out at a gym in her Maidenhead constituency in Berkshire, as well as details of meetings she had planned with senior police officers. These meetings have now taken place. There was also one mystery entry – a scribbled mention of the News of the World, the Sunday tabloid which closed in July. The diary also mentioned a meeting with Keith Bristow, chief constable of Warwickshire police, whom the document described as an “NCA [National Crime Agency] candidate”. The NCA has not yet had a chief appointed. The meeting was scheduled to occur at the Home Office headquarters on Marsham Street, central London. Scotland Yard said earlier: “We are aware that a document was misplaced and are looking into the circumstances of how this occurred. The paper was not protectively marked. Security was not compromised.” The diary featured timings and addresses for events May was to attend in the Maidenhead area, including a charity cabaret evening at Wentworth Golf Club, according to Police Review. The book also contained mobile phone numbers for her private secretary and for other contacts. May flew to Scotland on Sunday for the memorial day. Before attending the event, she had a “private meeting” with Stephen House, chief constable of Strathclyde police – who had been one of the favourite candidates to be commissioner of the Met. May spoke to him about Strathclyde’s approach to tackling gangs then had lunch with Nick Herbert, police minister. May’s diary reportedly stated that after returning to England, she was to attend a magistrates court open morning in Maidenhead and to appear on the Anne Diamond show on BBC Radio Berkshire. On Tuesday there was the meeting with Bristow, and one later with the deputy prime minister, Nick Clegg, in his office. Police Review said it contacted the Home Office on Monday to organise the diary’s safe return and held back from publishing details of the meetings until after they had taken place. Theresa May Police Scotland Metropolitan police London Sandra Laville guardian.co.uk