Looking at the news today, with the Danish minister moving full circle from "the UK doesn't realise it is a little country", to "The EU needs to start negotiating and not stalling", to the BBC having to choke on ire and report what Leave is saying; namely that it is now the EU which is stonewalling and not negotiating; I believe it's time to up the game.
Davis, in my estimation, now needs to come to the table this month and tell the EU that the UK has moved. If this is a negotiation, the EU now has to make a move too. If the EU does not make a move then the UK will walk away from the table and go full bore on total separation with no deal.
Until, that is, the EU gets down of it's high horse and starts negotiation.
Leave for a few months to simmer and the EU 27 to start bitching and backbiting about it. Then the UK can, kindly, come back to the table and talk negotiations.
Leaving the EU to justify it's "Negotiating position" of not negotiating at all.
Anything else is simple capitulation and that is the very worst thing the UK can do.
It will be interesting to see if the UK team has the gonads to do what needs to be done.