https://www.express.co.uk/news/worl...o-democracy-activists-british-consulate-china People of Hong Kong are wearing black descending into chaos because Britain gave Hong Kong back to China in 1997. It's a consequence of UK making Hong Kong such a wonderful place to live in compared to PRC in mainland China. Hong Kong are like my brothers and sisters suffering because UK turned its back on them leaving them open to Communism with Hong Kong's Beijing backed government.
Be damn careful about signing any kind of a contract, any international agreements, and any treaties. When you're wrong or your leaders are wrong you got to live with it, or shed a lot of blood and/or spend a lot of treasure to make it right.
Britain should have the right to annex Hong Kong and bring these people back under the protection of the UK.
Britain can get that right, but first they got to fight like hell to get it. I suppose Britain could just start putting their judges and bureaucrats into HK and see what happens but most likely it would get ugly fast and volunteers might be hard to come by.