Embodiments of the present invention provide apparatus (101) for controlling movement of a vehicle (100), the apparatus comprising processing means (10) configured to: receive first signals from a receiving means (202) in dependence on received transmitted signals from a remote control device (200) indicating a requested motion of a vehicle (100); receive one or more second signals indicative of a diagnostic device (400) being in operative communication with the vehicle (100); and provide an output signal for controlling movement of the vehicle (100) in dependence on the requested motion. The output signal is inhibited if: a diagnostic device (400) is in operative communication with the vehicle (100) and a maintenance mode has not been activated, as determined from the first signals or from one or more third signals; or if a door (402) or the bonnet (404) is open, unless a diagnostic device (400) is in operative communication with the vehicle (100); or if the vehicle weight is not being borne by the wheels (111, 112, 114, 115) unless a diagnostic device (400) is in operative communication with the vehicle (100). Associated methods are also provided.