Re: Negotiating...
The wealthy part of the country will still rely on cheap labour. Only it will now be coming from North of Watford instead of Romania (assuming you can actually persuade Brits to do the jobs that EU citizens used to do).
The EU citizens were only following Norman Tebbit's advice to get on their bikes and go to where the work is.
Young Brits are now also prevented from crossing the channel and getting a job in Europe, which used to be a life experience for school leavers. This was my main reason to vote remain as I wanted my kids to have the same opportunities that have now been taken away from them by the selfish twats that had these benefits themselves. Not an issue for Farage though as his kids have German passports.
I am out of there now though and as a British Expat to a country built on immigration, I can only see that migration is a massive boost to the overall economy.