In September 2015 he overwhelmingly won the Labour leadership contest and was appointed party leader on the 12th of that month.
- Simon Fletcher, campaign director. Fletcher has worked a number of key Labour figures including; Ken Livingstone for twelve years, including eight years as his chief of staff when he was Mayor of London; Tony Benn and is believed to have been a member of Socialist Action; and Ed Miliband, as his trade union liaison officer. He will work for Corbyn out of the Transport Salaried Staffs' Association Union offices in London.
- Kat Fletcher, agent. Was elected president of the National Union of Students in 2004, after running on an anti-tuition fees ticket and defeating the Labour Students candidate. Fletcher then worked at the Centre for Excellence in Leadership, as Ed Miliband's head of volunteers in his Labour leadership campaign in 2010 and as Corbyn's agent in the 2015 general election. She has been a councillor since 2013 and is currently deputy mayor on Islington council and runs small London pub company Handmade Pubs.
- Jon Trickett, adviser. MP for Hemsworth since 1996 and the current Labour Party deputy chairman, Tricket was one of the first MPs to back Corbyn. As an MP Trickett has worked as a PPS to Peter Mandelson and was a key ally of Ed Miliband, serving as his shadow minister without a portfolio and worked with him on speeches and policy announcements.
- Harry Fletcher, volunteer. Was assistant general secretary of trade union NAPO for over twenty years until 2013. Founder of Digital Trust, a not-for-profit group aiming to tackle digital abuse.
- Len McCluskey. The general secretary of Unite, Britain's biggest trade union and Labour's biggest donor.
- Janet Chapman
- Katy Clark
- Neale Coleman - Policy director, Labour Party
- Stephanie Driver - Head of events, Labour Party *
- Andrew Fisher - Political adviser
- Kat Fletcher - Researcher
- Simon Fletcher - Chief of staff
- Billie Heath
- Joss MacDonald - Diary and correspondence administrator, overseas visit to Israel and West Bank 11-15 November, funded by Fateh UK
- Anneliese Midgley
- Seamus Milne
- James Murray - Housing policy adviser, Executive member of London Borough of Islington
- Nicolette Petersen
- Nancy Platts
- Jack Reardon Bond
- Gavin Sibthorpe - Events officer/researcher
- Joshua Simons
- Kevin Slocombe - Media and spokesperson services for Labour Party
- William Smith - Political assistant | Niall Sookoo | Ayse Vali - Diary manager
- Angie Williams - Office administrator 
- Jeremy Corbyn, www.parliament.uk, 29 October 2013.
- BBC News Labour leadership: Jeremy Corbyn enters race, 3 June 2015, accessed 27 July 2015.
- Emily Gosden Jeremy Corbyn's team: the key figures backing the left-winger's leadership bid Telegraph, 26 July 2015, accessed 27 July 2015.
- Register of interests of members' secretaries and research assistants, 23 March 2016, parliament.uk, accessed 19 April 2016