They are the fundamental, central principles of the European Union. An entity we have decided to leave. Surely you have to work with the assumption that we'll no longer have those freedoms rather than blithely assuming we'll carry on much as we did before. The Government (other than Hammond, who appears to be a lone voice of reason in the inner circle) are already signalling that they'll happily sacrifice access to the common market so that we can restrict immigration to the UK. So that's wiping out er, all of them.
We already had the best possible deal we could ask for. Access to the common market without being part of Schengen or the Euro. D-Cam had even negotiated a way to restrict in and out of work benefits in the UK to newly arrived EU immigrants (which would have saved pennies in the grand scheme of things but hey, it's the kind of thing that plays nicely to the gallery who insist we have floods of Balkans arriving here every day to claim their £70 a week JSA). But no, we're going to get a better deal now despite not being in the club, royally pissing everyone else off, making ourselves a sitting target to become a deterrent to any other countries thinking of leaving and having very few, arguably no cards to play in our favour. Definitely. With Fox, Davis and Johnson doing the negotiating.