I work in the offshore survey industry; oil & gas, renewables and telecommunications. Most of my work is in the EU and Norway. This year, I was declined for two jobs in Greece, because I needed a permit.
I also need to queue at immigration, which I was formerly waved through. God forbid I don't get stamped in! I didn't last year and on the way back, missed my ferry, because immigration were not happy about it.
Fortunately, I had tickets, which allowed me to prove when I'd entered.
Last January, I had a shore based job in Ijmuiden. We were right next to the ferry terminal and it was when all the "Cloggies nicked my ham sandwich!" stories were going about.
I noticed that one Scottish fish company had a lot of lorries and I spoke to one of the drivers. I said that I'd heard that virtually no fish was coming to Europe, from the UK. Well, it turned out that they were coming over empty and only hauling fish back to Scotland.
My wife and her sister have a bakery, they do a lot of East European breads and they had trouble getting stuff from Bulgaria and other countries. Their suppliers have managed to sort it, but some of the ingredients have doubled in price.
Her friend makes ceramic nick-nacks and did some useful business in Italy and France, but has had to stop selling there, as it's no longer profitable for her. She still sells in the UK, but has lost a lot of income.
My neighbour has a fencing business, with most of his materials coming from Poland and I think, Latvia. Orders take weeks instead of days and often, the price is higher. He's had to lay some blokes off, as he frequently loses money.
He gives the customer a quote, with the current prices and if it's gone up in the meantime...
My friend is a plaster, he gets most of it from Germany. There was a hiccup last year, where it was hard to come by. It's now at least three times the price.
Just personal experience and anecdotes, I know. The papers have lots of stories about small businesses, which are struggling with regulations, paperwork, import duties etc.