Its called a Durian Nigel They arent "Doctor" leaves Pen,they are DOCK leaves as for the nettles your best off getting the growing tips in spring,you can make coffee from acorns,during the norman days the UK was known as the land of the fat-serf,because theres loads of food around us,its just most people wouldnt have a clue how to live off the land,I did a few survival courses once,its not difficult to get a few rabbits,harvest some edible mushrooms or catch a couple of trout