John Henshaw and Ricky Tomlinson appeared in the same episode of "Cracker"--Tomlinson as DCI Wise, which was the first appearance of the character, and Henshaw as a quarry foreman who is murdered and buried in an allotment with Tomlinson's character searching for him.
Nana makes a joke saying she loves Dibley Liz Smith who plays Nana was also in The Vicar Of Dibley.
Baby David is born at Christmas. Caroline Aherne, who plays Denise Best and also writes "The Royle Family" was also born at Christmas--Christmas Eve, to be precise.