The actor has been filming with the soap as newcomer Fraser Black - a possible love interest for Sandy Roscoe, played by Gillian Taylforth.
Viewers will see Fraser's first scenes next week, when he is introduced as a new client for the Roscoes' garage business.
Sandy's eldest son Joe (Ayden Callaghan) then decides to play matchmaker, determined to find a more suitable partner for his mum after learning that she is having a fling with Dodger Savage (Danny Mac).
Joe's plan pays off when Fraser turns up at the house to take Sandy on a date. However, whether she will really be prepared to give up Dodger for him remains to be seen.
Birdsall's previous screen credits include roles in Eldorado, Bugs, The Bill and Footballers' Wives, on which he played Taylforth's on-screen husband.
He also had a small part in EastEnders last year, playing Sharon Rickman's jilted fiancé John Hewland.
Hollyoaks airs weeknights at 6.30pm on Channel 4, with first look screenings at 7pm on E4.
Digital Spy Soap Scoop video - press play below to watch Amie Parker-Williams reveal gossip on Coronation Street's big stunt, Lauren's EastEnders return, a blast from the past in Emmerdale and more Roscoe dramas in Hollyoaks.