I wouldn't assume the UK "doesn't want" people like you there. I think they just want better say over who comes into their country.

It's very possible, and perhaps even likely, that they will look to implement a similar solution as the US has -- visas for skilled workers, to the extent they have a need for foreign labor, and there might even be direct relationships with high-tech hubs like Scandinavia.

But yes, there will be added bureaucracy, and some people will choose not to go because of it.