Hate to break it to you, but the rich elite in the UK will not suffer because of Brexit. The poor will suffer, as they have always done. The elite will be just fine, and probably be in a position to strengthen their standings from the chaos.
And finally, what is your conclusion on China then? You are not arguing they're in the right, so what? What's your suggestion? What's your take? What should the CCP be doing right now? Should they be implementing democratic reform on the mainland to converge with the HK culture more?