British Heritage Pass

Has anyone used the British Heritage Pass in Great Britain?? Is this worth purchasing, we are going to be in Britain for 15 days and seeing most of the places listed on this card. Is it as good as it sounds??

http://www.britishheritagepass.com/Welcome

Yes, it can be as good as it sounds. I've taken 3 two-week trips to England and used the Heritage pass each time. To see if it will save you money, you need to make a list of the places you know you will visit, check out the web site for each, and add up the admission fees. I think you will find that you are saving a lot of money. Plus, it's so easy just to show the card (and maybe ID, can't remember about that). The clock starts ticking the first day you use the card.