That is actually canonical in Dr Who. They call it Starship UK.

and they leave by lobotomizing a star whale and building the new UK on its back as it swims through the stars

so THAAAATS what happened to the crew of the Hail Mary

There's that, but also, looking at the sort of people pushing hardest for establishing Martian colonies, they are all the sort of folks who would tell you how you can be advancing humanity on another planet, then deduct the cost of your oxygen consumption from your paycheck, if not just cutting off the air supply if you happen to get a little uppity about "muh human rights" when they want you to work 16 hours a day for some dumb idea they had.

Liz Truss, I don't think I can stress, is a strange woman.

Despite getting the top job at the Conservative Party, her father was a left wing Academic, but she basically railed against everything she even considered "left". Pretty much everything that came out of her mouth as a politician has been pretty fucking insane from her front bench career to her running to be the Leader of the Tories.

The reason she remained as long as she did as Prime Minister was because the Queen died. Literally the last thing the Queen did of note was appoint her as Prime Minister at Balmoral (it's believed she knew she was dying and wanted to die at Balmoral because it was her favourite home). Because all politics stopped when the Queen died, she didn't need to do much of note, but the moment the mourning period was over, she took a fucking sledgehammer to the economy.

After this, before and after resigning she has...

• Called the Bank of England "Leftists" (which is fucking hilarious) for reacting badly to her mini budget.
• Blamed Transgender people for a KitKat Heist in Italy (No really).
• Released a book called "Ten Years to Save the West" in which she claimed everyone was out to get her.
• Basically became the Heritage Foundation's voice in Britain.

She's basically a mix of Donald Trump, Javier Milei and the parts of Thatcher that didn't make it to the papers.