I think it a really kick-ass score, one of later Lloyd-Webber's best, if not THE best. Hannah singing "Our Kind of Love" is still one of my greatest theatrical memories. I'm sure it's one of the reasons I hate "Love Never Dies"....
BUT the book was a mess. Not the story, the story, especially to an America who really couldn't yet grasp what had happened in Ireland, was fascinating and educational and so very sad. And there are very interesting ideas about terrorism that I had never heard voiced before.
The writing was more than sound but the structure was all f'd up. "God's Own Country", for instance. It's begun by the female Catholic lead, Mary. She gets her own verse and then another girl (a more compelling singer and actress) continues with her non-Catholic verse about the beauties of Ireland. We had established the beginnings of Mary's story so I just assume we will now follow this new girl who got half of Mary's song. Oh no. We never see that girl again. She is simply known in the program as "Protestant Girl". Even giving the secondary female lead (the aforementioned Hannah) the best song in the show throws off the basic structure. But Ben Elton directed his own book. If better directed I'm not sure the show would have had a longer life, but it would have at least become a succes d'estime.