Telegraph | Arts | Working with the wrong material
From the Telegraph's review of the stage production of His Dark Materials:
"... for much of its punishing length, this stage version never quite matches the sense of wonder, awe and delight created by Pullman in his superb sequence of novels."
and this page has snippets from various papers:

We went over christmas and we all loved it two boys 12,13 two girls 17,16 and me 41 we didn't notice time flying, even without Mary Malone and Mulefas it was cracking I think these reviews don't do it justice