He was the Parliamentary Under-Secretary of State for Public Health and Prevention from 2024 until February 2025, when he was dismissed and had his Labour membership suspended because of offensive messages he had written on WhatsApp.

[citation needed] He was educated at Egerton Park Community High School (now called Denton Community College) in Denton, Tameside College of Technology in Ashton-under-Lyne, North East Wales Institute of Higher Education in Wrexham from 1992 to 1995 and the University of Salford from 1995 to 1998, earning a BA in Politics and Contemporary History.

[3] At the age of 21, Gwynne became England's youngest councillor when on 2 May 1996 he was elected to Tameside Metropolitan Borough Council[citation needed], representing the Denton West Ward for the Labour Party.

[4] He was appointed to the House of Commons Procedure Committee in June 2005 and, on 10 November 2005, was promoted to become a Parliamentary private secretary (PPS) to Patricia Scotland, as Minister of State for Criminal Justice and Offender Management at the Home Office.

In the Opposition front bench reshuffle of October 2011 he was appointed to the Shadow Health team by Ed Miliband.

[7][8] Gwynne took a leading role in November 2015 in organising Labour in the Oldham West and Royton by-election, which took place as a result of the death of Michael Meacher.

[10] The Labour candidate Jim McMahon held the seat with a 10,000-plus majority and increased the party's share of the vote.

[17] Following the election, Gwynne retained his role as the Labour Party's Co-National Campaign Coordinator, and was promoted to become Shadow Communities and Local Government Secretary, replacing Grahame Morris.

[20][21] In April 2020, one day after Keir Starmer was elected as the new Labour leader, Gwynne resigned from his position as Shadow Communities and Local Government Secretary.

[30][28] In response, Gwynne wrote: "I deeply regret my badly misjudged comments and apologise for any offense I’ve caused"[31] and "I entirely understand the decisions the PM and the party have taken and, while very sad to have been suspended, will support them in any way I can.