Manchester United Born in Manchester, Borthwick-Jackson joined Manchester United's Academy at the age of 6 in July 2003 from
Fletcher Moss Rangers. He made his debut for the club's
reserve team at the age of 16, coming on as a substitute for
Tom Lawrence in a 4–1 win over
Bolton Wanderers on 16 September 2013. He made 22 appearances for the under-18s during the 2013–14 season, as well as two more in the
FA Youth Cup, and got on the scoresheet in the penultimate league game of the season against
Stoke City on 29 April 2014. In July 2014, Borthwick-Jackson played in all five of the under-17s' matches at the
Milk Cup, scoring in both the 4–0 semi-final win over Scottish side
Partick Thistle and the only goal in the final against French club
Vendée. He held a regular spot in the under-18s throughout the 2014–15 season, playing in 28 of their 29 league games, and scoring the second goal in their 2–1 win over
Blackburn Rovers on 31 January 2015. However, he also scored an own goal to level the scores against
Chelsea on 2 May, before Chelsea went on to win 2–1. He made the step up to the club's under-21s in 2015–16, and on 7 November 2015, he was named on the first-team substitutes' bench for the first time against
West Bromwich Albion; he came on for
Marcos Rojo in the 76th minute for his senior debut. Multiple injuries to the squad saw Borthwick-Jackson make his first start on 12 December 2015 away at
Bournemouth, ending in a 2–1 defeat. He finished the season with 10 senior league appearances, as well as winning the
U21 Premier League. On 2 May 2016, at the club's annual award ceremony, he won the U21 Player of the Year award after receiving more votes than teammates
James Weir and
Donald Love. On 30 May 2016, Borthwick-Jackson signed a new contract with United, keeping him at the club until 2020, with the option to extend for a further year. He was released by Manchester United when his contract expired on 30 June 2020.
Wolverhampton Wanderers (loan) On 22 August 2016, Borthwick-Jackson joined
Championship side
Wolverhampton Wanderers on a season-long loan. He made his club debut on 10 September 2016, in a 1–1 draw with
Burton Albion. He went on to make a further five league appearances for Wolves up until the appointment of new manager
Paul Lambert on 5 November 2016. After which he was phased out of the squad, with his last start being on 5 November 2016 and his last showing on the bench on 10 December 2016. The lack of game time led to Borthwick-Jackson returning to Manchester United to play for the Under-23s in the second half of the season after a mutual agreement between the two clubs was made.
Leeds United (loan) On 7 August 2017, Borthwick-Jackson joined Championship club and
rivals Leeds United on a season-long loan for the 2017–18 campaign. His debut came two days later against
Port Vale in the
EFL Cup, which ended in a 4–1 win. He made his League debut for Leeds on 12 August in a 0–0 draw against
Preston North End. On 16 January 2018, it was announced that Borthwick-Jackson's loan had been cancelled.
Scunthorpe United (loan) On 28 July 2018, Borthwick-Jackson joined
League One side
Scunthorpe United on a season long loan deal. He scored his first senior goals when he scored twice in a 5–3 win over
Charlton Athletic on 2 October 2018. Upon returning to Manchester United in June 2019, Borthwick-Jackson had a trial with
Eredivisie outfit
SC Heerenveen in July.
Tranmere Rovers (loan) On 2 September 2019, Borthwick-Jackson joined
League One side
Tranmere Rovers on loan for the
2019–20 season. On 9 January 2020, Borthwick-Jackson was recalled to Manchester United. He played 5 games in total for the club.
Oldham Athletic (loan) After his loan at Tranmere was cut short, Borthwick-Jackson signed for
League Two club
Oldham Athletic for the rest of the season.
Oldham Athletic Following his release from Manchester United, Borthwick-Jackson joined Oldham on a permanent basis, signing a one-year deal on 2 August.
Burton Albion On 7 June 2021, it was announced that Borthwick-Jackson was joining
League One club
Burton Albion on a two-year deal following the expiration of his contract at Oldham.
Śląsk Wrocław On 26 July 2023, Borthwick-Jackson joined Polish
Ekstraklasa side
Śląsk Wrocław on a two-year deal with an optional one-year extension.
Ross County (loan) On 18 January 2024, he joined
Scottish Premiership outfit
Ross County on loan until the end of the season. After returning from loan, Borthwick-Jackson terminated his contract with Śląsk by mutual consent on 10 August 2024.
Macclesfield In January 2026, Borthwick-Jackson returned to England after seventeen months without a club, joining
National League North club
Macclesfield on a short-term deal until the end of the season. ==International career==