Every time we have a thread like yours OP, loads of people (many of whom don't even live in the UK!), piling in saying how Britain has gone to the dogs, how it's a seething mass of xenophobia and hate and how you wouldn't recognise it, bla bla bla. This is utter bollocks!
We moved back here from the US 8 years ago for various reasons, but weather (we lived in the NE, which is boiling/freezing), schooling (US education is nowhere near as good as the UK), and a sense of history and heritage, plus family (I have a large one here), and proximity to Europe (which we both love and knew we wanted to travel around much more than was possible from the US), were all big considerations. And I can tell you that we (myself - a Brit and DH and American and our two DC, one born in the US, one here), have zero regrets.
The education here IS better, the weather is not as extreme (although this winter, I fully admit, has been miserable), we get to be part of a big family here, and we travel in Europe several times a year. Yes, we had a nice apartment in the US, yes we had good friends, yes we had DH's small family, but our quality of life here in the UK is much better.
I will add though that we were financially comfortable there and we're financially comfortable here - and that's important - because there have been cuts here in the UK to benefits, education and services since 2010. If you are on a low income and reliant on benefits then life has got harder, but if you do not fit that profile then IME nothing has changed and while I voted for Remain and am disgusted with all the Brexit bungling of our current government I don't honestly feel that much will change when it all shakes out. We'll still import fruit and veg from Europe, we'll all still go there on holiday, and people will still be able to move and work, albeit without the freedom to do so as easily as now. It doesn't benefit either Europe or the UK for it to be any other way (and many now doubt that Brexit will even go ahead).
We love the UK. We love the history, the landscape, the proximity to Europe, and people here are, IME, as friendly as ever. This is something for you and your DH to discuss and I strongly urge you to come over and visit before you make a decision based on 10-year-old memories, but don't think that the UK has changed irreparably - it hasn't.