Graham Cole - 2 roles, not one?

Watching Ring of Rosies (season 3, episode 5) today, I noticed Graham Cole (aka Tony Stamp in "The Bill") plays a German Soldier in the Cafe when Monique is singing whilst wearing Reinhardt's cap. She sits in his lap.

IMDB only has him down as having one uncredited role (in Just Light the Blue Touch Paper - s3 ep8). I've submitted an update so hopefully that will be accepted.