Network: Any physical infrastructure network that forms a telecom-related network and occupies physical space in/on the ground.
About
Telewest started providing internet service Blueyonder. Telewest merged with NTL on 2006 Nov, and then discontinued the BlueYonder after rebranding to Virgin Media (Source), (Source). Telewest cancelled LLU ADSL programme in 2000; no commercial owned ADSL launch found. Establishment date checked but not reliably determined (Source).