The stars of Colin from Accounts: ‘As I tapped Ewan McGregor’s shoulder, I knew I’d made the wrong decision’

Patrick Brammall and Harriet Dyer with either Zac or Buster as Colin from Accounts. Photograph: Tony Mott/Binge

The Hollywood truism goes: don’t work with children or animals. What is it like working with Zac and Buster, the two dogs who play Colin?

Patrick Brammall: Good. The roles they are playing are not a stretch. They are usually the most professional actors on set every time.