Bingowings said:
What's happened to Clive's voice and body are beyond anything he has written in terms of bizarreness. He went from a mild Liverpool accent to a weird Loyd Grossman mid-Atlantic voice to Animal off the Muppets and his body has turned into a badly made action figure.
I've read that he had surgery to remove some cancerous growths from his throat or something along those lines. That could have affected his accent.