If you’re like me and my family and like the outdoors and visiting historical places then you should get a pass on both of these sites: https://www.english-heritage.org.uk and https://www.nationaltrust.org.uk
By becoming a member / getting a pass you’re not only getting an excellent deal you’re actually helping some great people maintain & restore many wonderful places in the UK which are worth visiting.
So far I managed to visit The Stone Henge, The White Cliffs of Dover, Dover Castle and Cliveden and am planning on visiting more when we get clear skies during the weekend.