My publisher, well one of them, has recently brought out The Jottings of a Thames Estuary Ditch-crawler as an ebook.
See: http://www.amazon.co.uk/Nick-Ardley/e/B0034NL7IY
Also see: https://www.amberley-books.com/community-nick-ardley
That means all three titles with Amberley Publishing are now available as electronic books.
My ‘books’ page will be amended!