Manchester United Born in
Cambridge, He made his professional debut on 13 October 1999 in the third round of the
League Cup as a young United side lost 3–0 at
Aston Villa. After loans at
Royal Antwerp in Belgium, he made his
Premier League debut on 11 November 2000 in a 2–1 home win over
Middlesbrough as an added-time
substitute for
Dwight Yorke. On 17 December, he came on in the 80th minute for
Denis Irwin at home to
Liverpool and was sent off for a foul on
Vladimír Šmicer in a 1–0 loss. He scored two league goals in the title-winning 2000–01 season, one in a 3–0 win at
Bradford City on 13 January 2001 and the other on 3 March in a 1–1 draw at
Leeds United. After playing rarely for United in 18 months, Chadwick went on a one-month loan to
First Division team Reading in February 2003. He was inspired by
Arsenal's
Matthew Upson increasing his standing by making the same move. On his debut for the Royals on 10 February, he equalised in a 2–1 home win over
Gillingham. His deal was extended until the end of the season. He helped the club to the play-off semi-finals, where they were ousted by eventually promoted Wolverhampton Wanderers. In July 2003, Chadwick was loaned for the season to First Division side
Burnley. He missed pre-season due to two jaw operations as part of a two-year treatment. In 40 total games he scored six goals, including two in a 4–0 win over Bradford on 20 September; after that game, he conceded that he may have to leave United.
West Ham United On 2 August 2004, Chadwick moved to
West Ham United of the newly renamed
Championship on a free transfer. He was signed by
Alan Pardew, who had led him at Reading. In his
only season, he scored a goal on 10 December to open a 1–1 home draw with Leeds.
Stoke City Chadwick joined
Stoke City on loan at the start of the
2005–06 season. On 4 January 2006, the transfer was made permanent for a fee of £100,000, on a deal lasting until the summer of 2008 with the option of one more year. In the season opener away to
Southend United on 6 August 2006, Chadwick was carried off after collapsing. It was confirmed that he was suffering only from dehydration.
Norwich City On 13 November 2006, Chadwick signed on loan for
Norwich City until 3 January; he was signed by
Peter Grant, who had worked with him at Reading and West Ham. On his debut six days later, he opened the scoring in a 3–1 loss at rivals
Ipswich Town. He suffered a knee injury in that match, ruling him out until March. After his loan ended, he signed a 2-year deal for a £200,000 fee. He said that his transfer was due to his wife and children returning to Cambridge. His injury problems continued into the following season as he struggled for fitness.
Milton Keynes Dons On 1 October 2008, Chadwick was loaned to
League One club
Milton Keynes Dons for three months. He scored three goals in the eight games of his loan, including a brace on 28 October in a 2–1 win at
Leyton Orient. He returned to Norwich in the middle of November due to a knee injury. He moved permanently on a 2-year deal at the turn of the year, on a free transfer. Chadwick was MK Dons' Player of the Season for 2009–10 and 2010–11, with the latter season ending in a 4–3 aggregate elimination in the playoff semi-finals by
Peterborough United. In March 2011, his contract was extended by two more years. On 23 August that year, he scored twice in a 4–0 win at former club Norwich in the League Cup second round. A year and five days later, he did the same at the same stage in a 2–1 home win over
Blackburn Rovers. In March 2013, Chadwick signed a further two-year extension to his MK Dons deal.
Cambridge United On 18 March 2014 Chadwick joined his hometown club
Cambridge United on loan. He made his debut the same day in a 2–1 home win against
Welling United in the
Conference National. He signed permanently on 7 June, after the team won promotion in the play-off final against
Gateshead. In 2014–15, Chadwick played a part in Cambridge's run in the FA Cup, scoring in their 2–2 home draw with
Mansfield Town in the second round. In the fourth round against his former club Manchester United, he played in a goalless home draw and a 3–0 replay loss on his return to
Old Trafford; both sets of fans gave him a standing ovation when he was substituted in the latter game. At the end of the season he was released.
Soham Town Rangers and move into coaching After leaving Cambridge United, Chadwick signed for
Isthmian League Division One North side
Soham Town Rangers in November 2015. He spent one season at Soham before returning to Cambridge as a full-time coach in the club's academy. ==International career==