Drummond was born on 16 June 1962 in Aden, then part of the Aden Protectorate. She is the daughter of diplomat George Anthony Shepherd (1931-1996), who had served in the 4th Royal Tank Regiment, Trucial Oman Scouts, and 2nd Royal Tank Regiment,^[4] and Sarah Eirlys, née Adamson.^[5] She was privately educated at Roedean School, before studying at both Hull University and Southampton University. Drummond is also a graduate of the Royal College of Defence Studies and has completed two terms on the Armed Forces Parliamentary Scheme

Drummond sat on Winchester City Council from 1996 to 2000, before being expelled from the council after failing to attend a meeting for six months.^[6] During this time, she moved to the United States.

Drummond returned to the UK in 2004, and was selected to stand for Parliament in Southampton Itchen in the 2005 general election, where she won 26.8% of the vote and came second behind the incumbent Labour MP John Denham.^[7] At the 2010 general election, Drummond stood for Parliament in Portsmouth South, where she won 33.3% of the vote and came second behind the incumbent Liberal Democrat MP Mike Hancock.^[8][9]

At the 2015 general election, Drummond contested Portsmouth South again, and was elected to Parliament, winning 34.8% of the vote and a majority of 5,241 over the Liberal Democrats' Gerald Vernon-Jackson.^[10] From 2015 to 2017, Drummond was a member of the Women and Equalities Committee.

Drummond campaigned to remain in the European Union in the 2016 Referendum.^[11] She stated in 2016 that the referendum result diminished and would lessen Britain's influence in Europe.^[12]

At the 2017 general election, Drummond was defeated in Portsmouth South by Labour's Stephen Morgan, coming second with 37.6% of the vote.^[13]

In October 2018, Drummond was elected Voluntary Director of the Conservative Policy Forum by the National Conservative Convention.

In November 2019, Drummond was selected as the prospective parliamentary candidate for the safe Conservative seat of Meon Valley to replace the retiring incumbent George Hollingbery. At the 2019 general election, she was elected as MP for Meon Valley with 64.3% of the vote and a majority of 23,555.^[14] As a consequence she stood down as the Conservative candidate for Hampshire at the 2020 England and Wales police and crime commissioner elections.^[15]

Between February and September 2020 Drummond served as Parliamentary Private Secretary to Anne-Marie Trevelyan as Secretary of State for International Development^[16] before becoming PPS to Thérèse Coffey at the Department for Work and Pensions.^[17] In October 2022, Drummond was appointed to the Commons Public Accounts Committee and the Education Select Committee.

Under the 2023 Periodic Review of Westminster constituencies, her Meon Valley constituency is set to be dissolved and its territory divided between several new or revised constituencies. On 5 April, she faced a vote of local party members to become the candidate for the new seat of Fareham and Waterlooville, which takes in the majority of the current Meon Valley constituency; her opponent was Fareham MP and then Home Secretary Suella Braverman.^[18] Braverman won the vote by 77 votes to 54.^[19]

In July 2023, Drummond was selected to contest the next general election as the Conservative candidate for the neighbouring Winchester constituency, which will have its boundaries changed to include slightly less than a quarter of Meon Valley.^[20][21]

In 1987, she married Heneage Drummond, a descendant of the Jacobite soldier William Drummond, 4th Viscount Strathallan, of the family of the Earls of Perth. They have four children and three grandchildren.^[22] Before entering politics, Drummond was a lay inspector for Ofsted. She has also served as Chair of Governors at Milton Park Primary School and a trustee of Salterns Academy Trust in Portsmouth.

• No Blame Game - The Future for Children's Social Workers for the Conservative Party Commission on Social Workers (October 2007)
• Women Returners, Annual report for Women and Work APPG (2016)
• Brexit and Beyond edited by George Freeman MP – chapter on Coastal Communities (2019)
• The Future of Education, One Nation Conservatives (2020)

• Official website
• Profile at Parliament of the United Kingdom
• Contributions in Parliament at Hansard
• Voting record at Public Whip
• Record in Parliament at TheyWorkForYou