[1][2] Raised in Rochdale and based in Cromer, Norfolk, Walsh made his professional debut on 2 February 2008 with a first-round knockout of Riaz Durgahed.

[3] By April 2011 he had won his first twelve fights, and on 21 October scored a unanimous decision (UD) over Liam Richards to win the English super-bantamweight title.

[2] Walsh was set to make his first defence of the title in January 2016 against Ryan Doyle,[6] but instead faced the undefeated Darren Traynor, stopping the challenger in five rounds.

In the ninth round, Walsh sent Socarras to the ropes with a flurry of shots, which prompted the referee to stop the fight.

[11] Walsh challenged British and Commonwealth lightweight champion Sam Noakes at Wembley Arena in London on 7 December 2024.