I've heard a number of politicians say that those who are here will be able to remain. It would be such a mistake to suddenly tell people to leave. It's not going to happen.

Also a number of points about he article.

> Although Europe’s 500 million citizens dwarfs the 323 million in the US

So what. They all speak different languages, not one. So there are some hurdles there to selling to them.

In addition. Only about 4? countries in the EU are rich enough to be trading with. The rest aren't really worth a mention.

I'd easily take the 323 in the US, as I have only 1 language to deal with and immediate results in setting up a business for the US.

> “Long term I think I will have to relocate my business to the USA as the market in the UK is just too small to justify staying here,” she told me. What’s that? A market of 65 million too small? Well, yes, when just a fortnight ago it was 500 million.

This is laughable. I have a business in both the UK and the US. Even if I was just operating in the UK. I'd still have access to the US. How this article is sounding like the UK cannot trade with the EU is again laughable.

This article smacks of scare-mongering.

Finally one thing, follow the money.

> Look for talented British entrepreneurs suddenly turning up in Berlin, Stockholm, Lisbon and Barcelona.

Wasn't there an article on HN saying that Barcelona couldnt find enough tech workers? The evidence pointed to compensation.

I doubt there will be much of a brain drain, when British tech workers balk at how much they'd be losing in salary working anywhere apart from the UK or US.