Check out the following locations
Aberafon:https://www.google.com/maps/search/Aberafon/@52.9756706,-4.5208303,12z/data=!3m1!4b1
Aberafon -between the shoreline and the mountains on the Llyn Peninsula, south of Caernarfon. A valley and a rugged coastline, rockpools and all, inside the mountains. Swimmers may take a plunge, kayaking or wakeboarding is also great fun.Or just go for a stroll with the sea-salt wind in you hair
Turner Hall Farm: https://www.google.com/maps/search/Turner+Hall+Farm/@53.0736043,-4.008045,7z/data=!3m1!4b1
Turner Hall Farm in the lake district. A truly remote destination, way off the beaten track ideal for walkers and climbers, Scafell Pike, and The Old Man of Coniston.Great forr all walkers from modes from amblers to hard core high intensity fell runners.
Swattesfield: Suffolkhttps://www.google.com/maps/place/Swattesfield+Campsite/@52.304057,1.0584533,17z/data=!3m1!4b1!4m8!3m7!1s0x47d9b9255a084e07:0x2f98feb199fbb9a3!5m2!4m1!1i2!8m2!3d52.304057!4d1.060642
Wide open — two fields, a little lake, some bordering forest. A cosy off the beaten track feel, with the tent or campervan pitches and glamping.
Deepdale Backpackers:
Norfolk
Deepdale Backpackers and Campers has around 80 pitches and six tipis and yurts. The tipis are outfitted with a cast-iron chimenea, including fuel and fuel for the flame, foldaway seats, a grill, and a lamp. do nothing, stroll in fields, birdwatch, have fun by the coast,enjoy a cookery class, gaze at stars, play golf at one of the handful of local seaside courses (from crazy golf to pitch and put, 9 hole and championship royal courses) the choice is yours.
Ninham Country Holidays:
Isle of White
If you need to take a ferry to get there – surely that makes it more off the beaten track.The whole of the Isle of Wight (including the waters around the Island) is now a UNESCO Biosphere Reserve – a destination where here is a balanced relationship between people and nature.
Ninham has an off the beaten track rustic feel.
or perhaps you prefer something a bit wilder?
Dartmoor is the only place in the UK outside Scotland where it’s legal to wild camp – that is pitch up outside the boundaries of a regular campsite (or your own land).
It’s also where the royal marines train
https://www.theguardian.com/travel/2020/aug/22/wild-camping-weekend-on-dartmoor-magical-mystery-tour