Hi Rod sorry for the cut and paste but as you will see they sold them off years ago
British Broadcasting Corporation (BBC)[edit]
Responsibility for the transmitter assets of the
BBC lay solely within the corporation until 1997. The assets were then split into a separate company, prior to being sold.
The domestic transmitter network was purchased by a US company, Crown Castle, when it was privatised in 1997. Subsequently, in 2004, this was purchased by
National Grid plc, which merged in its own private communication network, the name changing to National Grid Wireless in October 2005. Transmitters used by the BBC Overseas services were sold to a new startup company, called
Merlin Communications