THE SNP has claimed Theresa May’s appeal to opposition parties for co-operation over Brexit “has fallen at the first hurdle” as the Prime Minister insisted her fight for those who were just about managing in society remained “undimmed”.

After Jeremy Corbyn mockingly rejected Mrs May’s offer of co-operation on key issues, saying it simply showed her government had “run out of steam,” the Nationalists picked up on “oblivious” comments made by Boris Johnson.

After the foreign secretary suggested there was “unanimity” on the UK Government’s Brexit plans, Stephen Gethins, the SNP’s Europe spokesman, hit out, saying: “Theresa May’s appeals to opposition parties for compromise over its damaging plans for leaving the EU has fallen at the first hurdle as her foreign secretary once again breaks ranks to say that instead of listening to concerns from across Westminster and devolved administrations, he sees 'unanimity'.

“Boris Johnson’s oblivious comments display just how out of touch the UK Government is with the reality of the impact of Brexit. But, more worryingly, they show the rhetoric emanating from the increasingly isolated Downing Street doesn't resonate further down Whitehall with her cabinet.

“The Prime Minister should make clear whether she shares the view of her foreign secretary or if it’s yet another case of bumbling Boris and she must follow her speeches with action and constructively engage with the devolved administrations over leaving the EU,” insisted the Fife MP.

In her first major speech since the General Election, Mrs May told an audience in London that she would act to protect the rights of workers, following the publication of Matthew Taylor's report on the so-called "gig economy".

She appealed to other political parties to put forward their proposals for debate and discussion ahead of the Government's full response to the report later in the year.

Mrs May acknowledged that the election result - which left her at the head of a minority Government dependent on the support of the Democratic Unionist Party - was "not what I wanted".

However, she insisted that she would press forward with the reform agenda she set out when she first arrived in Downing Street a year ago, saying: "My commitment to changing Britain is undimmed."

The PM added: "At this critical time in our history, we can either be timid or we can be bold. We can play it safe or we can strike out with renewed courage and vigour, making the case for our ideas and values and challenging our opponents to contribute, not just criticise.

"This country needs a government that is prepared to take the bold action necessary to secure a better future for Britain and we are determined to be that government. In everything we do, we will act with an unshakable sense of purpose to build the better, fairer Britain, which we all want to see," she added.

Today, Mrs May will be absent from Prime Minister’s Questions as she attends the welcoming ceremony for King Felipe of Spain at the start of his three-day state visit.

Damian Green, the first secretary of state, will take her place at the dispatch box and is expected to be faced by his shadow, Labour’s Emily Thornberry.