Watson resigned from the Shadow Cabinet on 4 July 2013 amid recrimination within the Labour party over a suspended selection in the Falkirk constituency.
In the 2015 general election, Watson was re-elected with a majority of 9,470. 
On 12 September 2015 Watson beat other promising candidates such as Stella Creasy and Angela Eagle to claim the deputy leadership of the party, breaching the 50 per cent threshold in the third round of voting. 
- Clare Cole 
- Josephine Dalton 
- Sarah Goulbourne - Political adviser to Tom Watson, paid by the Labour Party
- Barbara Hearn - Provided consultancy services from December 2015 to February 2016 on short term contract, paid by the Labour Party 
- Harry LePage - Administration assistant, the Labour Party
- Anna Thomas - Coordinator for the All-Party Parliamentary Group on Drones; paid by Labour Party to act as Policy adviser to Tom Watson 
- Mr Tom Watson, www.parliament.uk, accessed 15 May 2013.
- Crick on Watson’s DNA, Channel 4 News, 4 July 2013.
- Tom Watson parliament.uk, accessed 12 November 2015
- Who's who in Corbyn's Shadow Cabinet BBC News, Accessed 16 September 2015
- Register of interests of members' secretaries and research assistants, 23 March 2016, parliament.uk, accessed 25 April 2016
- 'Furniture Industry APPG',parliament.uk, accessed 11 November 2015