In the late 1960s to the early 1990s, Pebble Mill had a fleet of 'Links' or scanner vehicles that were used to relay vision signals from outside broadcasts (OBs) back to the Communications Centre or 'Comms Centre' before being redistributed to London. All audio signals were sent via copper cable (Post Office/BT land lines). When satellite transmission of picture signals began in the mid-1990s, Pebble Mill gained satellite dishes and had fibre optics installed as permanent links to Birmingham's BT tower.