I recently purchased The Hedgerow Hand Book by Adele Nozedar. It is a really good guide to wild edible plants in the UK. Clear illustrations are used to help identify plants. I like this feature as I think that illustrations are better at aiding you to find the key features of a plant.
A number of recipes are also included, as are medicinal and some folklore. I generally never use recipes, I find them too faffy. However for I followed the recipe for crab apply jelly – it came out pretty well.
All in all a good buy and small enough to throw into your backpack.
A Sushi Curious Blog 