Britain will have no right to even be in the room while EU laws are made, despite having to implement them in full during the Brexit transition period, according to leaked negotiating guidelines drawn up by Brussels.

Updated guidelines for chief negotiator Michel Barnier dated 22 January 2018 specifically state that “as a general rule, the UK will not attend meetings” of key committees involved in drafting European regulations.

EU negotiators are set to insist that “exceptionally, on case-by-case basis” other EU states could “invite” Britain to observe a meeting without any right to influence its content – but only if it is in the interests of the EU, or the issue is solely about the UK.

The as yet unfinalised guidelines are likely to rile up hardline Brexiteers even further, some of whom were already incensed by the idea the UK would have to follow EU laws without voting rights in EU institutions like the council and parliament.

Jacob Rees-Mogg, the keeper of the Brexiteer flame on the Tory right wing, has said such proposals would amount to the UK being a “vassal state” of the EU for years after Britain leaves on 29 March 2019.

The documents also confirm that the EU is pushing ahead with plans to keep free movement extended to the UK in full until at least 2021 as part of the transition, and Brussels will demand a legal veto over any trade deals the UK wants to sign with other countries.

David Davis yesterday rejected the idea that Britain would be a “vassal” of the EU under the plans, telling a parliamentary committee that as long as the arrangement was only for a “short time” it would be an acceptable compromise.

Brexit: the deciders Show all 8 1 /8 Brexit: the deciders Brexit: the deciders European Union's chief Brexit negotiator, Michel Barnier Getty Brexit: the deciders French President Emmanuel Macron Getty Brexit: the deciders German Chancellor Angela Merkel Reuters Brexit: the deciders Commission President Jean-Claude Juncker EPA Brexit: the deciders The European Parliament's chief Brexit negotiator Guy Verhofstadt Getty Brexit: the deciders Britain's Prime Minister Theresa May Getty Images Brexit: the deciders Britain's Chancellor of the Exchequer, Philip Hammond PA Brexit: the deciders After the first and second appointed Brexit secretaries resigned (David Davis and Dominic Raab respectively), Stephen Barclay is currently heading up the position PA

Negotiations on the transition phase are set to restart in earnest within weeks in Brussels, after a pause in talks over the new year period. Discussions on the trade framework are due to begin in March this year.