The Prime Minister is to signal Britain is heading for a hard Brexit after declaring she will not seek “anything that leaves us half-in, half-out”.
In a major speech, Theresa May is expected to demand an “equal partnership” with the EU on a model unlike any other in existence.
She is to say: “We seek a new and equal partnership – between an independent, self-governing, Global Britain and our friends and allies in the EU.
“Not partial membership of the European Union, associate membership of the European Union, or anything that leaves us half-in, half-out. We do not seek to adopt a model already enjoyed by other countries. We do not seek to hold on to bits of membership as we leave.
“The United Kingdom is leaving the European Union. My job is to get the right deal for Britain as we do.”
Advocates of soft Brexit had hoped that the UK might be able to negotiate a deal in which it maintained access to the single market in return for payment, and therefore offer businesses continuity.
Whether or not such a deal can take place depends on whether the UK and the EU find a trade off between controls on freedom of movement and access to the single market.
But May is to hint that the first may be more important, saying that British voters chose to leave the EU “with their eyes open: accepting the road ahead will be uncertain at times”.
At the same time, the PM will attempt to play down the rift with Europe, and stress shared values instead.
Addressing Europe, she is expected to say: “The decision to leave the EU represents no desire to become more distant to you, our friends and neighbours.”
Critics are already accusing May of prioritising immigration over the economy and security.
Liberal Democrat Leader Tim Farron said: “You can call this Brexit clean, red, white and blue, or whatever you want.
“But this doesn’t disguise the fact that it will be a destructive, hard Brexit and the consequences will be felt by millions of people through higher prices, greater instability and rising fuel costs.”