The Skelton Transmitting Station is a radio transmitter site at grid reference NY433376 near Skelton, Cumbria, England, about 5 miles (8 km) north-west of Penrith, run by Babcock International and owned by the Ministry of Defence.

[2] The site was built by J. L. Eve Construction during the Second World War, for long-distance short-wave transmissions, across Europe.

In 1946, the BBC was heralding the site as being "the World's largest and most powerful (shortwave) radio station".

It is used to transmit encrypted orders to submarines, including the Trident SLBM fleet.

[7] It uses as its aerial a 365-metre (1,198 foot) high guyed steel lattice mast, which is insulated against ground and is the tallest structure in the UK.