Betsy started his career at Woking, representing England at semi professional level and being named Conference Player of the Year in 1998, before Kevin Keegan moved in to sign him for Fulham during the 1998–99 season for £150,000, describing him as one of the best young players he had seen at his age. He made his debut at Anfield against Liverpool in the League Cup and spent three years at Fulham. Betsy’s only goal for Fulham came in their victorious 1998–99 Division Two campaign against Millwall. He made five league appearances during Fulham’s 2000/01 season after which they were promoted to the Premier League. He made one appearance in the Premiership for Fulham under Jean Tigana in a game against Manchester United at Old Trafford. He had loan spells at Bournemouth and Hull City before Barnsley came in for him in March 2002 for a fee of £200,000. He made over 90 appearances for the club and scored 17 goals and was the club’s top goal scorer in 2002–03 season with 11 goals from midfield. After a short spell at Hartlepool United (where he scored once against Huddersfield Town) he signed for Oldham Athletic in September 2004 he scored 5 goals and was a key member of the team which defeated Manchester City in the FA Cup. After turning down Oldham’s offer of a new contract, Betsy moved to Wycombe Wanderers in July 2005, signing a two-year contract.

Betsy was a regular in the Wycombe team during the 2005–06 season. He was also a regular goalscorer for the club, most notably with a hat-trick against Mansfield Town in September 2005 and in April 2006. Betsy was honoured by his fellow professionals by being named in the Professional Footballers’s Association (PFA) “Team Of The Year” for League Two and helped Wycombe reach the play-offs. Betsy’s last game for Wycombe was a notable one, the League Cup semi final defeat against the eventual winners Chelsea at Stamford Bridge.

In January 2007, it was announced that Betsy had been signed by League One Bristol City for a fee of £200,000. He was ever present in the city line up helping the Robins gain Promotion to Championship, scoring once in the process against Northampton. Betsy joined Yeovil Town on loan in October 2007. He returned to Bristol City on 7 November having scored once for Yeovil against Swansea City.

On 31 January 2008, Betsy joined Walsall for the rest of the season on loan. Betsy signed for Southend United on 7 August 2008, on a two-year contract.

On 1 September 2009, just 188 seconds before the close of the window, Betsy re-signed on loan for Wycombe Wanderers until 2 January 2010. On 15 January 2010, after a successful loan, Betsy signed for Wycombe on a permanent basis until the end of the season from Southend. Betsy also led the team in assists with eight, scoring five goals and being voted (OWWSA) Wycombe Supporters Player of the year, following which he signed a new two-year deal until 2012. Betsy was a regular in the Wycombe promotion side in 2010–11, but found first team opportunities limited in 2011–12, and left the club by mutual consent on 20 December 2011.

In 2010 Betsy was studying for a BA Honours Degree in Professional Sports Writing and Broadcasting at Staffordshire University.

Betsy is of Seychellois descent and, after initially rejecting the chance to play for the Seychelles national team, was finally called into the squad and made his international debut against a visiting French league side on 3 June 2011, scoring twice in a 3–0 friendly victory. Betsy was called up to the Seychelles squad for the football tournament at the 2011 Indian Ocean Island Games. He started all five of the Seychelles’ games in the tournament, scoring in the final against Mauritius, which finished 1–1. Betsy scored again in the resulting penalty shootout, which the Seychelles won 4–3.

On 17 February 2012, Betsy re-joined Woking as a free agent until the end of the 2011–12 season. After re-joining he has made a big impact in the team and in his fourth game back, he won two penalties in the space of five minutes. He went on to win the Conference South title with Woking having beaten Maidenhead United 1–0 away. After the success at the end of the 2011–12 season, Betsy signed on for another season at Woking and remained there until the end of the 2014–15 season before deciding to stop playing football so he could focus on his coaching career.