MPs have launched an inquiry into the state of Brexit negotiations after the latest round ended in recriminations about a lack of progress.

The Exiting the EU Select Committee will explore the strategy of the UK Government, as well as try to determine whether it has the capability to manage the process effectively.

The last round of talks ended with Brussels claiming Britain is “backtracking” on commitments, while the UK argued that the mandate given to the EU’s chief negotiator was preventing progress.

A further round of talks has been delayed by a week, with Theresa May announcing she will give a major speech on Brexit in an apparent bid to break through the deadlock.

Committee chair Hilary Benn said: “The Brexit negotiations are the most complex our country has ever faced.

“They are dealing with fundamental questions about the future of our economy and our country.”

He added: “Our first inquiry in this new parliament will scrutinise the progress of these negotiations, and the position of the UK Government and our negotiating partners in the EU.”

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

The committee will examine the priorities and positions of the UK Government and EU, the structure and sequencing of the negotiations and the Government’s management of the process – including whether Brexit Secretary David Davis’s department has adequate capacity.

After the last round of talks, chief EU negotiator Michel Barnier accused Britain of “backtracking” on its commitment to pay what it owes the EU budget in the years after Brexit.

He said he was “disappointed” by the UK position and publicly warned Ms May’s team it should go back to the drawing board, after it presented a legal analysis arguing that Britain owed far less that the Commission believed.

British negotiators meanwhile, have indicated they believe the mandate given to the EU team by member states is too narrow and preventing progress – in particular, the ability to deal with some aspects of future relations – and are pushing for European national leaders to broaden it.

Ms May will travel to Florence next week to make a major speech on Brexit, in a bid to kickstart stalled talks with the EU.