UK’s PM Theresa May has started forming her new government – as she begins her first full day in Downing Street.

Former London mayor and leading Brexit campaigner Boris Johnson said he was “humbled” having been named new foreign secretary, in one of Theresa May’s first cabinet appointments.

Philip Hammond became chancellor, Amber Rudd is home secretary, and Eurosceptic David Davis is new Brexit secretary.

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Theresa May later told European leaders she was committed to the UK leaving the EU.

Asked about his first priorities as chancellor, Philip Hammond said there would be “no emergency Budget”.

Philip Hammond said he would work closely with the Bank of England and other economic experts and make “carefully considered decisions over the summer”, followed by an Autumn Statement “in the normal way”.

Before the EU referendum, Philip Hammond’s predecessor George Osborne said he would have to cut public spending and increase taxes in an emergency Budget if the UK voted for Brexit.

In a series of congratulatory phone calls taken by Theresa May on July 13, the UK’s second female prime minister spoke to German Chancellor Angela Merkel, France’s President Francois Hollande and Irish Taoiseach Enda Kenny.

A Downing Street spokesman said Theresa May had “emphasized her commitment to delivering the will of the British people to leave the European Union”.

“The prime minister explained that we would need some time to prepare for these negotiations and spoke of her hope that these could be conducted in a constructive and positive spirit,” the spokesman added.

Theresa May will continue to fill out her new cabinet on July 14, with the new secretaries of state for health, education, and work and pensions among those expected to be appointed.