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EU negotiators have reportedly stepped up talks with Jeremy Corbyn over fears surrounding Theresa May's administration.

Sources apparently have said the Labour leader is "beginning to be taken seriously in Brussels" amid increasing concerns the Conservative leadership could collapse before Brexit is complete.

The supposed shift in attitude comes as Theresa May broke cover yesterday to insist she had full Cabinet support following her calamitous conference speech this week.

Mr Corbyn and shadow Brexit Secretary Sir Keir Starmer are said to have met Michel Barnier, the European Union's chief negotiator, and Frans Timmermans, the first vice-president of the European Commission, and other leading Brexit intermediaries.

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(Image: Getty)

Talks have been conducted at a higher level and more frequently following "a significant change in tone" from Brussels, The Daily Telegraph reported.

A source told the newspaper: "Corbyn is beginning to be taken seriously in Brussels.

"He has been a mystery on European affairs through the referendum and since.

"People didn't quite know what he wants or what he thinks but that is changing."

(Image: Daily Mirror)

(Image: Daily Mirror)

Elsewhere, a report in The Sun today states MPs have called for a 'No Brexit Deal minister' to show the UK is prepared to walk away from the EU without an agreement ahead of a fresh round of talks scheduled later this month.

(Image: Reuters) (Image: REUTERS) (Image: AFP)

Theresa May was humiliated on the the eve of her Tory conference speech following a vote by the European Parliament which declared there had been "insufficient progress" on Brexit.

The Prime Minister wanted to move on to talking about Britain's future trade with the EU by the time she got to a crucial European Council summit on October 18.

Mr Barnier said Mrs May had given the EU "some openings" in her major speech in Florence last month, but warned there are "still serious divergences, especially on the financial settlement."

The apparent softening approach towards Labour comes after Labour declared a major shift in Brexit policy.

(Image: REX/Shutterstock) (Image: PA) (Image: PA)

In August, Sir Keir announced Labour's pledge for Britain to stay in EU single market for up to four years .

Clarifying Labour's new policy in an article for The Observer, Sir Keir said the party is open to the possibility of negotiating new single market and customs union terms which the UK could sign up to on a permanent basis.

The shadow Brexit secretary wrote: "Labour would seek a transitional deal that maintains the same basic terms that we currently enjoy with the EU.

"That means we would seek to remain in a customs union with the EU and within the single market during this period.

"It means we would abide by the common rules of both."