Well, that tells you all you need to know about politicans !
Forget Brexit, if they can deliver Reith by the end of October they'll win the all-important TV Forum demographic.
There is a commercial HDMI to HD-SDI converter available which is popular amongst broadcasters. It respects HDCP until you get out a soldering iron and remove a capacitor. I believe such a modification is entirely unsupported by the manufacturer and they wouldn't dream of recommending you attempt it.
At a push, could you get better-than-SD by pointing a decent camera at a decent screen?