Career
His previous clubs include Hull City, Scunthorpe United and Farsley Celtic. Allanson had two loan spells at Farsley before making the deal permanent before the 2007-2008 season. After making 15 appearances during the 2007-2008 season he was released and joined Bridlington Town.
He played against Farsley in a pre-season friendly in which his new team lost 6–0.
Due to his extremely pale complexion, he is affectionately known by his team mates as Casper the friendly ghost. Ashley has played for the England Futsal team and the England Universities 11-a-side team
He is a coach at the Hull City Centre of Excellence and holds a Union of European Football Associations B football coaching badge.