Their chemistry works so well because Gordon (Patrick Brammall) and Ash (Harriet Dyer) are married in real life.
The two lead stars are also the co-creators and writers. It's not known if Colin from Accounts is also part of the family!
The character of Colin from Accounts was named after a real life dog of the same name who Harriet Dyer (Ashley) and Patrick Brammall (Gordon) had previously fostered.
The dog playing Colin is not disabled in real life.
The awkward and embarrassing incidents that happen to characters in the show are said to be a mix of fiction and real life incidents that happened to people the writers know.