Frazer-Williams joins the club having previously played for AFC Dunstable and Varsity Nine Football & Education Programme last season. Prior to playing for Dunstable, he was a part of the Watford Academy from Under-9s through to Under-16s.
He played predominantly as a left-back and left wing-back during his time at AFC Dunstable, helping them to a 14th place finish in the Southern League Division One Central last season.