[8] Upon her election to the House of Commons in 2005, she resigned from her seat in the European Parliament; it went to Syed Kamall, the next candidate on the Conservatives' regional list for London.

This required positions in Cabinet to be awarded to Lib Dem MPs, so Villiers did not become Secretary of State for Transport as might have been expected in the event of a majority Conservative government taking office.

[13] She made a speech in February 2016 defending the Royal Ulster Constabulary and the British Army, which had been accused of colluding with loyalist murderers in the Loughinisland massacre.

[14] Villiers had said that "a pernicious counter-narrative" of the Troubles was emerging whereby responsibility for acts of terrorism was being shifted onto the security forces "through allegations of collusion, misuse of agents and informers or other forms of unlawful activity".

[16] Following the referendum, on 14 July 2016, Villiers resigned from her position as Northern Ireland Secretary[4] after stating that new Prime Minister Theresa May had offered her a post in the Cabinet which was "not one which I felt I could take on".

In June 2020 The Times newspaper reported that the delay in the formation of the Intelligence and Security Committee of Parliament since the 2019 United Kingdom general election had been due to Villiers appointment having been dismissed by the Prime Minister for her defiance of the Government's whip on a vote where she supported an amendment which would have banned the import of chlorinated chicken products from the US in upcoming post-Brexit trade negotiations.

The house, a semi-detached property that she bought for £296,500 in May 2004, is an eight-minute drive away from High Barnet tube station, from which commuters can reach Westminster in about forty-five minutes.

[26] Since September 2008, Villiers has dedicated a considerable proportion of her public announcements to aviation policy, specifically the expansion of airports in the South East of England.

[29] In September 2019 at that year's Conservative Party Conference, Villiers set out plans to end live exports of farm animals, ban primates from being kept as pets and for cats to be microchipped.

[30] In 2022, Villiers spearheaded opposition to Prime Minister Rishi Sunak's plan to set housebuilding targets for councils to alleviate the housing shortage in the United Kingdom.

[31] In a 2023 interview, Villers said that denser housing, such as the apartment buildings proposed to be built near the Cockfosters station on the Piccadilly line would turn the London suburbs into "East Berlin.

[32] In August 2023 it was revealed that Villiers had failed to declare she held shares worth over £70,000 in the oil and gas company, Shell, whilst serving as Secretary of State for Environment, Food and Rural Affairs.