lolarabbit
You might be interested in the Art Fund pass. It's not a dissimilar amount of money from memory but we get a lot more value from it. Several of the National Trust properties near me are included along with some English Heritage places and a huge array of galleries and museums such as Chatham Dockyard, some free, some half price. I'd never heard of it before but am a real convert now.
I belong to the Art Fund which in has been renamed The National Art Fund. I gave up our National Trust membership,when we gave up driving but kept our Art Pass. We can go to lots of places that don’t need us to drive. Not necesssarily art galleries. There is Charles Dickens house in Doughty Street which we love and you can have a lunch in the basement and imagine what it all must have been like in those days. See his desk on which he wrote many of his books. The membership issues with a book full of places you can visit. Also it allows you free membership to Kensington Palace , plus half price entry to other exhibitions at the National Galleries and so many others.