Philip Hammond has been accused by Tory MPs of “not having the prime minister’s back”

Brexiteers have begun a co-ordinated attempt to discredit Philip Hammond and senior officials days before cabinet ministers see the first economic analysis of different options for exiting the European Union.

Key members of the cabinet will be shown the government impact assessments in one-to-one meetings with officials this week, before a cabinet sub-committee discussion expected the following Wednesday.

The analysis, drawn up using contributions from across Whitehall, is likely to cause a dispute since cabinet ministers expect it to show that hard Brexit options will stall the economy for years to come. “The impact analysis will put the cat among the pigeons, assuming you believe in experts,” one government source said.

At the end of each of the meetings, which Oliver Robbins, the prime minister’s