Dunc. If you enjoyed "the amateur poacher" then try "The Gamekeeper at home" by the same author, you will love it!
If you are really still a boy at heart, and have adventure running through your veins, then read "Bevis, the story of a boy" also by Richard Jeffries. It is a little bit swallows and amazons, but much better, and for me each time I read it, I am living the dream and reflecting on my own childhood, which was in so many ways, similar.