Both the dog and the swan featured got listed in the credits.
Sergeant Turner (Bill Bailey) is credited twice because the same actor plays two different characters who have the same name.
Although the opening credits start out normally, the movie's title doesn't show up until before the closing credits start.
"Aaron A Aaronson" is listed last in the end credits Cast List, the joke being that it would be the first name listed (alphabetically) in the telephone directory.
In the UK version, which is released by Universal Pictures, sound effects of police whistles, bells and sirens are perfectly timed to accentuate the graphics of both the Universal Pictures and Working Title logos. The US version, released by Rogue Pictures, misses out on this little bit of a joke.