Reading a humorous comment in another thread about Borrowdale graphite mine lead me down a rabbit hole of Googling and reading about "plumbago". One thing struck me was the1752 act about graphite, theft is a felony (at least until 1961 when the distinction between felony and misdemeanor was abolished), and unlawful entry into a graphite mine was a specific crime.
Briefly looking at the Law Commission, I didn't see this as a repealed act when searching, although that doesn't mean it isn't.
Is this still a (theoretical..) crime in England and Wales?
And do any of you felons want to admit your trespasses?