@BillRM,
There's a huge difference between secondary school chemistry and the technical instructions on how to make a pipe bomb or something like that.
Your outrage seems misplaced, this individual has pleaded guilty to attempted murder, and you're upset about the laws in place that stopped him doing it.
With so many things that you know little about you let your imagination run away with you. We're talking about technical, specialist instructions and you bang on about gunpowder. He didn't get done for having a bit of paper with sulphur, charcoal and saltpetre scrawled on it.
He didn't need to make gunpowder, he'd bought a **** ton of fireworks. What he needed and was arrested for was instructions on how to turn a **** ton of fireworks into a bomb.
It's the same when you asked if there would be a general strike to make Brexit happen. It's one of the most ridiculous things I've ever heard, and anyone who knew the slightest thing about the UK would have known it was absolute nonsense.
You're incredibly ignorant about the UK, but instead of trying to plug that gap with knowledge you fill it with wild paranoid hysterics and a need to constantly wrap yourself in the flag. Do you want a biscuit or something, or a pat on the head for fulfilling the stereotype of stupid American?