Unfortunately, this deal is no longer valid
Posted 3rd Apr
Art Pass gives free or discounted admission to many art galleries, museums and some selected National Trust properties. These trial offer seem to run regularly - here is the latest one. Says that you can't use the offer if you've done it before. Maybe try a different email address. Check for local venues on the website - can be a good deal if there are good venues locally - but does depend where you live. Note that students can get an Art Pass for £5 (this offer is usually live in September/October at the start of each academic year.