Examples -
National Trust membership is £159/y for a family or £91.20/y for an adult, whereas Scottish National trust membership is £135/y and £84/y respectively - and you can use it in England.
Bit more niche but a paddle board or craft licence for the Norfolk Broads (annual toll) is £46.32 but a British canoe membership is only a bit more at £60 /y and this entitles you to paddle most places on the UK including the Broads.
Would love to hear other examples if you have them!