When Wallace answers the door, a flat cap and blue gray raincoat are seen hanging up next to Gromit's yellow raincoat & hat; this is a tribute to Wallace's original voice actor, Peter Sallis, who wore the flat cap and raincoat in his role as Norman Clegg in Last of the Summer Wine (1973), a series which would last until Sallis retired from acting in 2010, seven years before his death in 2017.
At the climax of the movie you can see a sign that says "Yorkshire Border: Keep Out" on one side, and "Lancashire Border: No, YOU Keep Out" on the other. Yorkshire and Lancashire are neighbouring counties that have a strong rivalry with each other. This same sign can be seen in "A Matter of Loaf and Death".
Nick Park: "At the peak of it, we have around 35 animators all working every day on different sets doing between 1-5 seconds of animation a day. We have around 200 supporting crew in the studio too. It's a massive team effort to make a film like this. In a good week, we might hit a minute of film. That's good going too!"
Marks the first new Wallace & Gromit film since the death of Wallace's original voice actor Peter Sallis in 2017.
Wallace's desktop is a cluttered mess of numerous unnamed folders, except for one named "Cheese Pics".