Anyone done the railway 2for1 deal in London?

[guineapugs]

I've had a look on-line but I'm still not sure how you use a train ticket to get a 2for1 deal at London attractions. Can anyone help please? Hoping to go to Madame tussards. Thank you!

Yes. It is a bit of a faff but it does work. I used it at Kew. www.daysoutguide.co.uk/2for1-london?gclid=CjwKCAjwyaWZBhBGEiwACslQowvf3kvJ80BOBcyYSZQnaSX2YryWnD4qGrqKgAIB4hLDWBOkfGZORBoCjXYQAvD_BwE&gclsrc=aw.ds