hi
ray mears essential bushcraft is good, it does exactly what it says on the tin, so to speak, and it's a good size to fit in your pack.
The next book i want to get, is again by ray mears,called "oudoor survival handbook", i havent got it yet but i think it's more oriented to our climate, flora and fauna, so that you can learn various survival and bushcraft techniques appropriate to the uk, i think it might even be laid out to account for the change in the seasons, anyone else confirm this? If it is what i think it is then it might be what you're after aswell.
hope this helps