It's Peter Pan : a Pop Up Version with Sound, published by Templar books.
What I look for when I go to look at the year's Christmas books is that magic feeling that you are entering another world.
I'm first drawn to the illustrations. I then open the book slowly (I like endcovers)..and wait a moment. If I get the slightest hint of the feeling that I had when I was a child opening a new book, anticipating, holding my breath a little, then I know that the book has probably got 'it' - that special quality that makes it worth having in my collection. I do try not to judge too quickly, some stories need to unfold a little before you get caught up in them, but usually I know right away.
I can recommend this one as a magical book. It's very cleverly made and has enchanted both the children and the adults I have shown it to.

Big Ben strikes its familiar notes (If I was really clever I'd be doing the sound with this.....)

The children giggle...

The water laps and

a very sweet crescendo indicates the happy ending!
(Waterstones had it at half price today and I bought another - second happy ending...)