Also, governments have been trying to kill Bitcoin since day one by trying to fork it and overtake Bitcoin's #1 spot with the fork (be it XT, Classic, Unlimited, Cash.. you name it).
They have realized that they cannot kill it from the technical aspect, so they will try to be a dominant force in the market. They cannot also simply naked short it to hell, so they will buy it up as much as possible. Get ready for crazy numbers in 2018.
But if that mindset exists why haven't UK banks taken it on? It's one the world's financial centres. There are plenty of other places with little or no regulation where you can bank just fine.
You cannot sell lemonade for Bitcoin and maintain a business account in the UK.
Governments will be the first ones with interest to move big sums of money in the blockchain... in The City there are the biggest people of high finance, I doubt they are stupid enough to let pass this opportunity. They will attempt to regulate UK exchanges, and they will keep buying BTC over the counter just like rich institutions do, then they will pump it when they are loaded enough. But the interesting trades always happen OTC, forget about exchanges, most of the rich people don't even use them.