A mixed reality control apparatus for a system having at least one remote data source requiring at least one physical control input, the apparatus comprising a headset for placing over a user's eyes, in use, the headset including a screen, the apparatus further including a processor configured to receive data from the at least one remote data source and display the data on the screen within a three-dimensional virtual environment, and image capture means for capturing images of the real world environment in the vicinity of the user, the processor being further configured to: blend at least portions or objects of the images of the real world environment into the three-dimensional virtual environment to create a mixed reality environment, including the data, to be displayed on the screen; and generate a virtual representation of the at least one physical control input and blend the virtual representation into the mixed reality environment at a selected location, and generate a marker representative of the selected location; wherein the apparatus is configured to receive a user input in association with the marker, identify the user input as an action in respect of the control input, or the virtual representation thereof, and generate a control signal to effect the action accordingly.