a single written document (it is currently uncodified) to prevent further curbs on civil liberties. On 25 March 2021, following a debate on the six-month extension of emergency powers during the COVID-19 lockdown, Walker made a widely reported speech in which he said: The speech was described as "surreal" by The Guardian, "bizarre" by The Independent, "astonishing" by Yahoo, and "odd" by indy100. On 18 April 2021, Walker published an op-ed in The Daily Telegraph in which he stated his concern about the rumoured COVID vaccine passports, specifically by drawing parallels to other public health concerns not managed in the same way, such as obesity. Retirement from the House of Commons: 2022–present On 1 February 2022, Walker announced he would be standing down at the next general election, saying there had been "a lot of grief and pain" in the country which had meant politics had become a "pretty toxic environment". Walker endorsed Penny Mordaunt during the July 2022 Conservative Party leadership election. He became the fifth Conservative MP to publicly call for the Prime Minister Liz Truss to resign. During the government crisis on 19 October 2022, Walker called the Truss ministry "a shambles and a disgrace... utterly appalling", commenting of its supporters that he had "had enough of talentless people" for whom "it’s in their own personal interest to achieve a ministerial position". Recognition In 2012, in a debate in Parliament on mental health issues and their "taboo", Walker spoke about his 30-year experience of obsessive–compulsive disorder, alongside the Labour MP Kevan Jones, who spoke about his own experience of having depression. Walker and Jones were both later praised for their speeches by Time to Change, a mental health anti-stigma campaign run by charities Mind and Rethink Mental Illness. Walker has twice won The Spectator Speech of the Year at its annual Parliamentarian of the Year Awards: the first time in 2011 and the second time in 2012 when he shared the award with Kevan Jones. He was also one of The Spectators Parliamentarians of the Year in 2013. In 2012, he was chosen as one of the Telegraphs "50 Great Britons" for that year and was also one of The Guardians "Stories of 2012". He was awarded the President's Medal by the Royal College of Psychiatrists in November 2013. Personal life Walker is the stepson of middle-distance runner and former Conservative MP Sir Christopher Chataway. He is