Most domestic solar thermal panels do not need planning permission and are covered by permitted development rights. There are restrictions on the size and location of these systems. If you live in a conservation area or listed building, or want to install a very large solar thermal system, check with your local authority to see if you will need planning permission.
Lynmouth
Lynmouth is a town in Devon, England, on the northern side of Exmoor. The village straddles the confluence of the West Lyn and East Lyn rivers, in a gorge 700 feet (210 m) listed below Lynton, which was the only place to expand to when Lynmouth became as built-up as feasible. The villages are linked by the Lynton and Lynmouth Cliff Railway, which works two cable-connected cars by gravity, making use of water tanks. The two villages are a civil church controlled by Lynton and Lynmouth Town Council. The church limits extend southwards from the shore, and also include communities such as Barbrook and little moorland settlements such as East Ilkerton, West Ilkerton as well as Shallowford. The South West Coast Course as well as Tarka Trail pass through, and the Two Moors Way ranges from Ivybridge in South Devon to Lynmouth; the Samaritans Way South West runs from Bristol to Lynton, as well as the Coleridge Way from Nether Stowey to Lynmouth. Lynmouth was described by Thomas Gainsborough, that honeymooned there with his bride Margaret Burr, as "the most delightful place for a landscape painter this country can boast".