If this is all that Christianity has to answer to folks like Dawkins, then woe is us, and no wonder people are being annoyed by our faith. Such lukewarm religion has never done anyone any service.
McGrath seems to have absolutely no clue about what "Intelligent Design" actually represents, but in a totally ignorant and uniformed manner repeats the same mantra about ID that is coming from the atheist camp. Only one hour of his doubtlessly precious time, devoted to watching the documentary "Unlocking the Mystery of Life" would have saved him from probably perpetual embarrassment.
If you're looking for a book that will strengthen your faith in God, or would arm you with solid arguments to counter Dawkins' disciples all around us, don't buy this book. It would have been bad enough and perhaps tolerable as a blog or free e-book, but is frankly, not worth the paper it's printed on.