When they pull up to the theatre once arriving in London, the yellow hatch markings change to a clear road and a double yellow line and then back to the hatched markings.
After they leave the ship in the container port, there is a container with a Union Flag on it. The flag is upside down.
When they are first in London there is a pavement entrance to the Underground. The left part of the sign says 'Line 19' (I think it was 19). Lines in London are named and do not have numbers.
Thut signs his name in Roman characters, despite the papyrus being written in hieroglyphics.