Bea and Arth were played by the co-executive producers Joanna & Matthew Elphick's children Beatrice & Arthur Elphick. The film was also filmed primarily in their Colchester home.
The painting that appears in Jackie's hall is by the same artist as the painting that appears in the Christmas party scene; Zoe Sawyer the sister of the writer director Kate Sawyer.
The Christmas party scene was actually filmed in Mid-August. The temperature on the set was so hot that there were scheduled breaks to allow the camera (and the cast!) to cool down.