The Scot, who found fame as a contestant on Britain's Got Talent in 2009, is currently shooting The Christmas Candle, a tender tale set in 1890, about angels and Christmas wishes, with Barks, Hans Matheson and The Hobbit: An Unexpected Journey star Sylvester MCCoy.
Boyle admits she's having a blast on set because she gets to dress in costume.
A statement from the 51 year old reads, "Everyone on set is a delight to work with and it's a fantastic experience to be part of the team. I'm really enjoying getting dressed in the period costumes and stepping back in time."
But Barks, who performed with the cast of Les Miserables at the Oscars on Sunday (24Feb13), reveals she's struggling to keep up with the hectic shooting schedule, adding, "Having just landed from the Academy Awards I had an hour to unpack and repack and get to set. I'm very excited to be part of The Christmas Candle and I'm loving every second."