The second consecutive film written by Peter Baynham to have the name Arthur in its title, the first being Arthur starring Russell Brand. 

The toy that Steve steps on towards the end of the film is Shaun the Sheep, another famous Aardman character. 

Grandsanta says that he is 136 years old. But if he were 136 years old, he would not have been able to be Santa for 70 Christmases and then see his son, the current Santa, complete 70 Christmases as Santa.