Abstract: An event adjudicator (10) comprising a first event register (14) capable of registering the occurrence of each of a plurality of local events, a second event register (16) capable of registering the occurrence of one or more remote events, which local and remote events constitute a group of events, an adjudicator (12) capable of determining which event of the group of events occurred first and providing an output accordingly. An interface (16) comprising a sensor (V1, 20) arranged to sense an actuating signal from a television unit (66) and a controller (22, 24) to produce a control signal correspondent with the actuating signal.