I don't think it's a crime to pick them if you don't know what they are. BBC news: "Exceptions will be made for people who unknowingly pick the mushrooms in the wild or find them growing in their garden, and critics have argued the act will be difficult to police."
I find it pathetic that anyone can make it a crime to eat a mushroom. No one owns nature. It's a shame.
You can still kneel down and bite it off. That's not really "picking" it. You never hold it in your hand, it just "appears in your mouth."
It is still pathetic though. And almost impossible to police, although I do know some people who were cautioned a couple of years ago having decided to go collecting right next to a school.