A couple of years ago, I happened to read Graham Norton’s third novel Home Stretch. Rather patronisingly, perhaps, I was surprised by how accomplished it was, especially in its sympathetic but melancholy portrait of life in a West Cork village. Yet, judging from ITV’s new adaptation of his first novel Holding, this was something he’d pulled off before – because, here again, it’s pretty clear both why Norton would want to write kindly about the kind of place he grew up in, and why he would have wanted to leave it.