Lancaster was not a core site in the BT network but has been included in view of the unusual arrangements required to support a change in ITV regions in January 1982. Prior to this date a group of transmitters in the southern part of Cumbria were included in the Granada region: the Kendal TV relay rebroadcast that at Lancaster which itself relayed the main transmitter at Winter Hill. Kendal and its five dependent stations were then transferred to the Border region, requiring a programme feed from Carlisle.
The solution involved a BT link from Carlisle to the Lancaster relay, together with an IBA "self-provided" link onwards to Kendal. It would seem feasible for Kendal to have been linked directly from the BT site at Whinfell Common so the routing via Lancaster was presumably chosen for operational reasons. It is assumed Lancaster was linked by a branch from the main BT route at Heysham, using a dish on the broadcast mast.