But that's not what you said. You said it is a fact that they don't currently need permits, and a fact that they will.The current system is, unless you have an agreement for free movement - both ways (ala Scandinavian countries) you cannot reside and work in an EU country if you are not a member. Unless an agreement is reached with the EU, UK citizens will be under the same conditions as IS, Chinese and Australians for example. The UK will also have to agree to allow currently resident EU nationals the right to remain and work. This will be complex and hard to agree in detail.
I am assuming we are ok for 2 years, but after that all bets are off, it will be done to the euro sceptics to negotiate with a europe that currently hates them.
It's not a fact! I imagine we will negotiate a deal that allows those people to work here without a permit. It is essential for both the EU and the UK that we do.