The documents - setting out proposals for Northern Ireland and the border with Ireland, continuity on the availability of goods and confidentiality, and access to official documents after Brexit - will seek to prove the U.K.is ready for talks to advance to the next stage, according to the statement.
The Chancellor Philip Hammond and the International Trade Secretary, Liam Fox, write that the transition period is created to avoid a so-called "cliff-edge" - but their comments in the Sunday Telegraph don't reveal how long this period will last. He said: "Over the summer we heard that Philip Hammond was courageously fighting off the more extreme Brexiteers. Supposedly he was looking for a compromise to keep Britain within the customs union and single market as long as possible", he said.
Chapman, a former journalist who was chief of staff to Davis until June, tweeted this week that "Brexit is a catastrophe" and called on "sensible" lawmakers to reverse it.
Meanwhile, U.K. economic growth is faltering amid uncertainty about what the country's future trading relationship with the European Union will be.
Hammond and Fox wrote in the article, that a time-limited interim period must be established to ensure proper Brexit.
"We are both clear that during this period the United Kingdom will be outside the single market and outside the customs union and will be a "third-country" not party to EU treaties", they said.
That period, they said, can not be indefinite and will not be a "back door" to staying in the European Union but rather to ensure a smooth pathway for businesses and citizens alike.
Meanwhile, the leading Conservative Remainer Anna Soubry indicated she could be prepared to join with politicians from other parties to stop the country "staggering recklessly" towards a hard break with Brussels.
Writing in the Mail on Sunday, Soubry said: "If the prime minister or her successor [in the event of May standing down] is not prepared to confront the ideologues, I gravely fear that the party could split - and that would change Britain's political landscape completely". "We will leave the customs union and be free to negotiate the best trade deals around the world as an independent, open, trading nation ..."
The UK is now due to leave the European Union at the end of March 2019 after almost 52 percent of Britons opted to leave the bloc during the European Union referendum in June previous year.
"Pulling Britain out of the single market and the customs union in 2019 will drive our economy over a cliff edge, putting jobs and family finances at risk", he said.