No, these things are not Brexit related. I have read a few cases of people who have been here for years, married etc but not done the paperwork.........Brexit was voted for last June, the home office are not that speedy at enforcement.
Brexit was about controlling unfettered immigration, we cannot take everybody. It is about (in part) preventing the weakening of existing cultures, we would all campaign to save indians up the Amazon and yet see our own culture as disposable. Other EU countries are saying this too. An influx of people who naturally want to bring their own ways / religion / structures is going to be a problem, we have to have ways to cope with that.
Look at the other EU countries, they are saying the same thing. We cannot afford to take all comers and pay them the same benefits as UK nationals, when in many cases, it is paid to children, who are not here and then receive fabulous benefits with the exchange rates to their home country, where wages are very poor.
I voted out because I resent the way the EU controls all the traditional remedies and that meant many were removed fro the shelves.
I do not think open boards are safe, the bomber who killed people at the Christmas market was able to go all over Europe before being captured.
I am surprised that people cannot know, what people who voted out wanted, it isnt as if there is no mention of it in the media.
Best thing to do is educate yourself about the Brexit point of view if that is the way we are heading and you don't understand why. It will not be perfect, the EU were given chances to adapt and refused, we do not elect them and cannot sack them. The only option then is to leave.