So next time someone asks, puff out your chest and say, “It’s London, mate.” You can add a dramatic pause and whisper, “Though technically it’s the capital of the UK, but don’t tell anyone I said that.” They’ll think you’re clever, and honestly, you are.
Now go enjoy your coffee. And remember, if anyone tries to tell you the capital of Britain is Manchester, just laugh politely and change the subject. They’ve clearly been watching too much football.