I'm afraid I haven't heard of the book.
I can confirm though that John and Ian Galt are one and the same person on documents submitted to the charities commission. The list of Potters House U.K churches he has done 'independant' accounting for are as follows.
Luton, Tottenham,Newcastle, Archway, Northampton and Bury st. Edmunds.
This is based on records over the last
Forum:
Destructive Churches