During a mid credits sequence, Rattus explains which parts of the tale are actually true.
At the 19:40 mark, there is a graffiti of a Roman legionnaire throwing a bouquet of flowers with the title "Romanscy", spoofing the famous Banksy rioter graffiti. Interestingly, Roman graffiti did exist, often with crude, satirical and critical messages, and many examples have survived to this day.
Some parts filmed at Butser Ancient Farm, Chalton, Hampshire U.K.
First feature film to star Lee Mack.