First appearance of Jim Howick as Gerard.
First appearance of Endy McKay as Mark's critical coworker, Lisa.
Olivia Colman and Jim Howick appear together in the 3rd season of Broadchurch.
In seasons 1-3, there were two wall phones hanging in the hallway on either side of the kitchen. However the one between Jez's bedroom and the kitchen has since been removed.
This episode is set in Kettering but isn't filmed there. Mark gets an 'angry lap dance' in a strip club but Kettering doesn't have a strip club.