On the seating plan for the wedding, Pete and Dawn's last name is shown to be "Whitely". In later episodes, it is revealed to actually be "Sutcliffe".
Doesn't have the start-of-episode phone call.
Andrew Knott and Russell Tovey, who play Dirtbox and Budgie, were also in the movie and play with James Corden in 'The History Boys' in 2006. Since then they've all appeared in another Alan Bennett movie 'Lady in a Van' with Dame Maggie Smith