I am a naturalised British Citizen. I live in the "home counties" with my English DH and British born dc. I was surprised by the election results. I thought most people would be cautious and vote for the status quo. I am worried about the volatility and our economic prospects.
But, I don't feel unwelcomed here. In my neighbourhood, everything at a local, social level is going on as normal. Most of my friends are British. I have noticed no change of attitude towards me at all. I feel no differently about them. My European friends feel sad, but again our friendships are unchanged.
I realise that there are people who will have voted out of frustration with the rate of immigration, but I am able to keep that in perspective and appreciate that in my real life interactions everyone is warm, kind, and welcoming as ever. When I consider why some people may have been fearful and frustrated and voted Leave, I try to consider their point of view: small island nation feeling overwhelmed by the rapid pace of change and large number of newcomers changing the old folk-ways. Then I feel compassion for them, rather than affronted. I am middle aged and have lived in many countries and cultures before settling here. It is truly the most open, least racist place that I have ever lived. So, for me, I expect things to turn out alright in the end.
However, I completely understand people wanting to return "home," if they feel like things are irreversibly changed for them emotionally. I just think the impulse to want to go is hard to fulfil. Once you have put down roots: bought a property, built a career, DC in school, etc. It can be very difficult and costly to go. You can do it, but it takes a big push and some sacrifice. I wonder if they will have any stats after a year or so, showing how many EU citizens have actually left.