Armed Forces Minister James Heappey has added his name to the list of about 100 MPs to announce they are stepping down at the next general election.
It came just a week after former prime minister Theresa May announced she would not be seeking reelection.
Mr Heappey, who will leave his ministerial role at the end of the month, said while it was a "painful decision" not to contest the election for the newly created seat he had been selected for, he wanted to "prioritise my family and pursue a different career".
"After much reflection, I am afraid I have taken the painful decision not to stand as a candidate in the forthcoming general election," he said in a letter shared on social media on Friday.
He added that “a great deal has changed in my life over the last few years".
More than half, 66, are Conservatives – the most from the party to leave Parliament since 1997.
Former Conservative Party chairman Brandon Lewis was also among the most recent additions, announcing his decision on Thursday, saying it was not made "easily" but he was proud of "the small part I have been able to play in public life".
But among other notable names are former deputy prime minister Dominic Raab, former chancellor Kwasi Kwarteng, former health secretary Matt Hancock and former defence secretary Ben Wallace.
In August, announcing his intention to step down, Mr Wallace said: “I went into politics in the Scottish Parliament in 1999. That’s 24 years. I’ve spent well over seven years with three phones by my bed.
“I took over a department that had suffered 30 years of cuts and conceded that the whole of government was about health and education, while defence was just a discretionary spend.
“What I hope I’ve managed to do the last four years is unlock genuinely new money and win the argument that defence is core.”
Former ministers Harriet Harman, Margaret Hodge and current deputy speaker Rosie Winterton are among the Labour MPs to announce they are stepping down.
Those from other parties include Ian Blackford, former leader of the Scottish National Party in Westminster.
A UK election must be held by January 2025 but can take place earlier.
Prime Minister Rishi Sunak has said it is his "working assumption" that the election will be held in the second half of this year.
The Conservatives are currently about 20 points behind Labour in the polls.
Conservative MPs stepping down
- Adam Afriyie, Windsor
- Nickie Aiken, Cities of London and Westminster
- Lucy Allan, Telford
- Richard Bacon, South Norfolk
- John Baron, Basildon & Billericay
- Paul Beresford, Mole Valley
- Graham Brady, Altrincham & Sale West
- Steve Brine, Winchester
- Bill Cash, Stone
- Chris Clarkson, Heywood & Middleton
- Tracey Crouch, Chatham & Aylesford
- Dehenna Davison, Bishop Auckland
- Jonathan Djanogly, Huntingdon
- James Duddridge, Rochford & Southend East
- Philip Dunne, Ludlow
- George Eustice, Camborne & Redruth
- Mike Freer, Finchley & Golders Green
- Nick Gibb, Bognor Regis & Littlehampton
- Jo Gideon, Stoke-on-Trent Central
- Robert Goodwill, Scarborough & Whitby
- Chris Grayling, Epsom & Ewell
- Stephen Hammond, Wimbledon
- Trudy Harrison, Copeland
- Oliver Heald, North East Hertfordshire
- James Heappey, Wells
- Gordon Henderson, Sittingbourne & Sheppey
- John Howell, Henley
- Alister Jack, Dumfries & Galloway
- Sajid Javid, Bromsgrove
- David Jones, Clwyd West
- Greg Knight, East Yorkshire
- Kwasi Kwarteng, Spelthorne
- Pauline Latham, Mid-Derbyshire
- Brandon Lewis, Great Yarmouth
- Theresa May, Maidenhead
- Stephen McPartland, Stevenage
- Bob Neill, Bromley & Chislehurst
- Matthew Offord, Hendon
- Mark Pawsey, Rugby
- Mike Penning, Hemel Hempstead
- Andrew Percy, Brigg & Goole
- Will Quince, Colchester
- Dominic Raab, Esher & Walton
- Douglas Ross, Moray
- Paul Scully, Sutton and Cheam
- Alok Sharma, Reading West
- Chloe Smith, Norwich North
- Henry Smith, Crawley
- Royston Smith, Southampton Itchen
- Gary Streeter, Devon South West
- Edward Timpson, Eddisbury
- Charles Walker, Broxbourne
- Robin Walker, Worcester
- Ben Wallace, Wyre & Preston North
- Craig Whittaker, Calder Valley
- William Wragg, Hazel Grove
The following MPs, formerly Conservative but now sitting as independents, are also standing down:
- Crispin Blunt, Reigate
- Matt Hancock, West Suffolk
- Julian Knight, Solihull
- Bob Stewart, Beckenham
Other independent MPs stepping down
- Nick Brown, Newcastle Upon Tyne East
- Conor McGinn, St Helens North
Labour MPs stepping down
- Margaret Beckett, Derby South
- Paul Blomfield, Sheffield Central
- Ben Bradshaw, Exeter
- Karen Buck, Westminster North
- Jon Cruddas, Dagenham and Rainham
- Alex Cunningham, Stockton North
- Wayne David, Caerphilly
- Colleen Fletcher, Coventry North East
- Margaret Greenwood, Wirral West
- Harriet Harman, Camberwell and Peckham
- Margaret Hodge, Barking
- George Howarth, Knowsley
- Ian Mearns, Gateshead
- Christina Rees, Neath
- Barry Sheerman, Huddersfield
- Alan Whitehead, Southampton Test
- Rosie Winterton, Doncaster Central
SNP MPs stepping down
- Mhairi Black, Paisley and Renfrewshire South
- Ian Blackford, Ross, Skye and Lochaber
- Douglas Chapman, Dunfermline and West Fife
- Angela Crawley, Lanark and Hamilton East
- Patrick Grady, Glasgow North
- Peter Grant, Glenrothes
- Stewart Hosie, Dundee East
- John McNally, Falkirk
- Philippa Whitford, Central Ayrshire
Sinn Fein MPs stepping down
- Micky Brady, Newry and Armagh
- Francie Molloy, Mid Ulster
Green MPs stepping down
- Caroline Lucas, Brighton Pavilion
Plaid Cymru MPs stepping down
- Hywel Williams, Arfon
