The key word in Thermo's post is "wild". A culitivated field of wheat is obviously not wild but a forest may look to be wild but may actually be a farmed crop and any removal could be deemed theft.
Common land used to be land that users had certain rights to although many of the uses have fallen into disuse. Depending on the particular plot of land people had the right to graze animals, gather firewood etc but as thermo points out it's pretty much a question of quanities, you could graze cows but not harvest grass lands for hay and the like . Similiary you could collect firewood , fallen branches bushes etc but not cut down large trees.
Apart from species that are protected by law I really don't think there's a problem providing that you are not spoiling the countryside or damaging property, I love wild mushrooms, bilberries , nettles and the like and if it's growing on pasture land then just ask the landowner most don't mind at all in my experience.
Common land used to be land that users had certain rights to although many of the uses have fallen into disuse. Depending on the particular plot of land people had the right to graze animals, gather firewood etc but as thermo points out it's pretty much a question of quanities, you could graze cows but not harvest grass lands for hay and the like . Similiary you could collect firewood , fallen branches bushes etc but not cut down large trees.
Apart from species that are protected by law I really don't think there's a problem providing that you are not spoiling the countryside or damaging property, I love wild mushrooms, bilberries , nettles and the like and if it's growing on pasture land then just ask the landowner most don't mind at all in my experience.