This field in Stoke Park Estate, Bristol is absolutely stuffed with Common Sorrel. It's a great place to go if you want to try its beautiful lemon flavour. Pick a young leaf and chew it and you will get a big burst of lemon flavour in your mouth.
There are also a lot of Pignuts in this field. But rembember the Countryside & Wildlife Act 1981, states that it is illegal to uproot any wild plant without the land owners permission.