I'm new to this thread, but I might as well push it to the next level.
Our next contender goes by the name of Dominic Van Allen.
This guy dug a secret bunker, with the entrance behind some bushes, in a super posh community's dog park. It was masterfully built with concrete reinforcement and everything. It was fully undetectable despite it being located in a heavily foot trafficked park. He was there for years, through summer and snow, surrounded by the richest of the rich.
When the britbong pansy officers finally discovered the secret bunker, they become so butthurt to this act of civil disobedience that they called in the terrorism specialists. "How dare someone live rent free in the queen's country!" they shouted to one another, "And without a Loicense" screamed the unimpressive paraplegic non binary officer. "This guy must be a criminal mastermind to have pulled this off!" ...In reality he was just a chill homeless guy.
It's a breddy gud read.
...Allegedly they found weapons buried in proximity to his camp so he caught charges for those. I've seen several people suggest that they were planted to legitimise the overzealous britbong pansy officers existence and budget.
https://www.theguardian.com/news/2020/mar/05/invisible-city-how-homeless-man-built-life-underground-bunker-hampstead-heath 