A July 2024 arrival from Colchester United, the big left-sided or central defender has played most of his football in League Two after an early education that saw him progress through the Premier League academies of West Ham and Arsenal before he signed his first contract at Brighton & Hove Albion. 

While on the South Coast, his first senior experience came via loan spells with Dartford and Braintree Town in the National League before he moved up to the EFL with Crawley Town, Cambridge United and Accrington Stanley in further loan deals. 

The Dagenham-born defender moved north of the border to Scottish Championship side Falkirk in 2018 following his departure from Brighton before he rejoined Crawley in League Two on a permanent basis in 2019. Dallison made more than 80 appearances for the Red Devils over three years before Colchester paid a fee for his services in 2022. 

He spent two and a half years with the U’s, playing 64 times before his move to the Fleet.