Doctor reveals that he has stopped trying to repair the circuit as he has become fond of its appearance. The other TARDISes that appear in the series have chameleon circuits that are fully functional.

The TARDIS is famously "bigger on the inside". A much larger control room lies inside the police box, at the centre of which is a console for operating the TARDIS. In the middle of the console is a moving tubular device, typically referred to as the time rotor, which moves in sequence with the flight sound effects. The presence of a physically