As an aside he lives in New Zealand
Actually, unless he has moved in the last 12 months, (which I confess could be possible) he actually lives here in Sydney. He and I meet up occasionally at SMWS meetings, although he has missed the last few meetings, so as I say, perhaps he has crossed the Tasman Sea. (That being the body of water that separates Australia and New Zealand!
I can probably get in touch with him reasonably easily if you like?
Philip actually presented an interesting and entertaining plenary lecture at the 2003 Australian Malt Whisky Convention where he led us through the journey he went on in re-tracing Barnard. (Which is what the book you're enquiring about is all about!)