Wild Plants are Natures Number 1 Superfood.
They don't cost you anything, are very healthy, and full of nutrients and lifeforce. This video shows you different wild edible plants growing in the UK: Primrose, Nettle, Pig Nut, Dandelion, Hawthorn, Pennyworth, Wild Garlic (Ramsoms), Jack-by-the-Hedge (Hedge Garlic), Wall Pennywood (Navel Wood).
Be careful, if you don't know the plants. Ask a friend or other expert to join you on your first trips.