Josh Sims

Reading (loan) On 20 August 2018, Sims joined Reading on a season-long loan. He made his debut for Reading two days later, in a 2–2 away draw with Blackburn Rovers in the Championship. Sims was brought on just after the hour-mark to replace Sone Aluko. He was recalled in January.

New York Red Bulls (loan) On 7 August 2019, Sims joined New York Red Bulls on loan until the end of the calendar year. On 20 October 2019, Sims scored his first goal as a professional to help New York to a 1–0 lead against Philadelphia Union in the 2019 MLS Cup Playoffs, New York would eventually lose 4–3 in overtime. After appearing in nine matches and scoring one goal, Sims' loan with New York Red Bulls was extended until 30 June 2020.

Doncaster Rovers (loan) Sims moved to League One side Doncaster Rovers on 16 October 2020 on a three-month loan. He scored his first goal for Doncaster, and his first professional goal in English football, in a 2–1 loss to Crewe Alexandra on 24 October 2020. On 27 January 2021, it was announced that Sims had rejoined Doncaster for the remainder of the 2020–21 season.

On 4 June 2021, Southampton confirmed that Sims had been released at the end of the 2020–21 season.

Ross County On 14 February 2022, Sims signed for Scottish Premiership side Ross County. He left Ross County when his contract expired in July 2024.

Yeovil Town On 15 August 2024, Sims signed for National League side Yeovil Town. He was released by Yeovil Town at the end of the 2025–26 season.

AFC Totton On 1 July 2026, Sims signed for National League South side AFC Totton.

International career Sims has represented England at U17 through to U20 level. He was a part of the squad that won the 2014 UEFA European Under-17 Football Championship.

Personal life Sims grew up in the town of Gillingham, Dorset and attended Gillingham School.

At the beginning of January 2022, Sims tested positive for COVID-19, and despite having no symptoms, Sims explained how he 'didn't feel the same' and 'felt fatigued' when playing after returning to Doncaster following a hamstring injury he suffered in December. In late March 2021, Sims suffered a glute injury, which he recovered from, but still suffered from fatigue. Premier League

2016–17 Premier League

2017–18 Premier League

2018–19 Premier League

2019–20 Premier League

2020–21 Premier League

Southampton U23 2016–17 Major League Soccer

2020 Scottish Premiership

2022–23 Scottish Premiership

2023–24 Scottish Premiership

2024–25 National League South

Honours Club Southampton U21 Premier League Cup: 2014–15 EFL Cup runners-up: 2016–17

International England U-17 UEFA European U-17 Championship: 2014