Continuity mistake: At the beginning of the episode, the police are chasing the bus and they give the numberplate as starting with 'Whiskey zero four seven' (Or something similar). That is W047, yet later on when the flying bus comes through the rift in time/space, the numberplate is completely different. This is because whilst filming in Dubai, the original bus broke down and had to be replaced.
Plot hole: The intro scene shows the thief hanging from the skylight trying to steal a gem. She escapes where she came in and yet the next scene shows her walking inside the museum. This scene doesn't make sense because she already had an effortless exit on the rooftop.