The Mendip transmitting station is a broadcasting and telecommunications facility on the summit of Pen Hill, part of the Mendip Hills range in Somerset, England, at above sea level. The station is in St Cuthbert Out civil parish in Mendip district, approximately northeast of the centre of Wells. It has a tall mast, which was built in 1967 and weighs around 500 tonnes, and is the tallest structure in South West England. The mast broadcasts digital television, FM analogue radio and DAB digital radio, and had broadcast analogue colour television from 1967 until 2010. It has become a Mendip landmark, providing a method of identifying the hills from a distance. Description The station is owned and operated by Arqiva (which acquired National Grid Wireless, previously Crown Castle). Until 2008 a GRP aerial cylinder, containing the analogue television transmitting antennas, was mounted at the top of the mast, bringing the total height of the structure to . With a mean height of above sea level, these antennas were among the highest in the UK. They were removed in 2010, the antenna cylinder being replaced with a new antenna assembly, ready for digital switchover later that year. The present assembly is slightly shorter than the previous cylinder, causing the overall mast height to be reduced from to . There are red aircraft warning lamps (six sets of two lights) on the mast and two lights on top. The lights were upgraded in February 2007 to comply with CAA 2000 Air Navigation Order, designed to prevent low flying aircraft from hitting the mast. The mast was repainted during 2007. The mast can be seen from as far away as Puriton during the day and the red aircraft warning lights make it visible at night from pretty much anywhere on the Somerset Levels and the Vale of Glamorgan near Cardiff. Television Mendip was configured as a C/D group transmitter when it entered service with analogue PAL transmissions. In July 2007, Ofcom confirmed that it would remain a C/D group transmitter at digital switchover. The mast broadcasts digital television over a large area of the west of England, including Somerset, Wiltshire, North Somerset, Bath and North-East Somerset, Bristol, South Gloucestershire, southern Gloucestershire, northern Dorset and East Devon. Cardiff and other parts of southeast Wales were also able to receive the analogue TV transmissions from Mendip, and many households used it in preference to their more