Huge caveat:
I have no experience immigrating to England (which is why I've joined this forum, to ask for help), but I do have almost a decade of experience living abroad.
I can't give you any practical/financial advice, but I can give you advice as an experienced ex-pat:
Life abroad is challenging at the best of times. It places a great strain on you physically, emotionally, and mentally. Particularly if you are looking to go abroad on your own (as I did, and it sounds like you are) rather than with a spouse/partner or family unit, you are taking upon your shoulders the full burden of adapting to a new country, set of customs, laws, culture, etc.
I've also listened to British friends go through horrors in trying to get mental health care for their loved ones. In some cases, a 12-18 month wait to get a few weeks of cognitive behavioral therapy. In other cases, loved ones who have made suicide attempts only to be sent home rather than receive any care beyond physical needs. (Remember my caveat that I haven't lived here, so my secondhand listening experience should be balanced by those who actually have experience here.)
Don't underestimate the tolls of adapting to a foreign country: driving on the other side of the road, getting used to a new system of doing things, making friends/connections in a completely new setting, selling/storing your possessions and all the red tape involved in the millions of unanticipated chores of moving overseas, and all of the difficulties such as filing taxes from abroad.
I was 100% committed to moving overseas when I did it for the first time. I'd spent two years preparing, researching, learning about the culture/customs/system, and moving overseas was a dream come true. It was still an intensely difficult endeavor. I'm glad I did it, but I was in full physical health, reasonable mental health, and had a social network already in place for when I moved there. It was still incredibly difficult and isolating.
No one can tell you what's best for you, but I hope you'll think carefully about all of the ramifications. I'm just as scared about Trump as you are, but maybe you can explore options now without jumping to any decisions.
Best of luck to you. <3 Hope this comes across as an attempt to be helpful, not discouraging.