In their debut season, the team was an instant threat to the established clubs in the league finishing runners up in their division, and reaching the semi-finals in the postseason.

In their second season the club failed to defend their championship, but still added silverware to their trophy cabinet by clinching their first National Division title.

In 2011, the club re-branded as Brampton City United, and left the CSL in 2016 to compete in CAF LIKA Supergroup Open Division.

Toronto Lions FC were formed in 2002 under the ownership of Arnold Milan, and Anthony Ayo serving as the club's president.

[1] The administration board consisted of Bill Dixon, Francois Glasman, and Aldwyn McGill serving in the General Secretary, Treasurer, and Club's Promotions and Liaison roles.

[4][5] Laferrara notable signings were Brian Bowes, Darryl Gomez, Anton Skerritt, Caswain Mason, and O'Neil Brown serving as team captain.

McGill managed to achieve a seven-game undefeated streak which led to a postseason berth by finishing third in the Eastern Conference.

[8][9] For the 2003 season McGill signed Trinidadian international Hayden Fitzwilliams, Aaron Benjamin, Maxim Dorneval, Nikola Vignjević, and Gabriel Pop.

[10] Unfortunately the Lions failed to repeat their previous success, which resulted in McGill transferring his head coach responsibilities to Goran Miscevic.

[11] Though the Lions performed poorly during the regular season they still managed to find success in the Open Canada Cup tournament.

In the tournament the club reached the finals where they faced London City, but lost the match on penalties by a score of 4–2.

[18][19] Former Toronto Lynx head coach, and president of the Premier Soccer Academy Duncan Wilde was appointed manager.

The signings included Darren Baxter, Aaron Steele, Shawn Faria, Igor Prostran, Sergio De Luca, and CSL veterans Phil Ionadi, Sa Brahima Traore, Marko Bedenikovic, Ryan Gamble, Domico Coddington, Angel Velazquez, Orlin Chalmers, and Paul Daccobert.

[37] Costa brought in former Toronto Lynx players Jeremy Shepherd, Cameron Medwin, and Adolfo Mella.

On January 16, 2011, Brampton announced another re-branding to Brampton City United FC under the new ownership of Michael DiMatteo and Leal Jose[43] The new crest bears a strong resemblance to the English Premier League's Manchester United, with a majestic lion in place of Manchester's traditional red devil.

[49] In addition to the CSL club, Brampton United also fielded a team in the Canadian Premier Futsal League.

[50] After a very successful first year, Brampton United defeated the Toronto Boca Juniors 6–3 at Seneca College to capture the 2012 CPFL Championship.

Barreto changes to the roster were the signings of Cuban international Reysander Fernández, and several CSL veterans as Mirko Medic, Adrijan Tismenar, Oscar Cordon, Mark Jankovic, Alex Braletic, and Milos Scepanovic.

Brampton United captured their first CSL Championship on October 10, 2005, in a 2–1 match against the Vaughan Shooters at Esther Shiner Stadium.