The set-piece event had been due to take place on Monday 19 June. The ruling Conservatives are negotiating with the Democratic Unionist Party (DUP) to get support for their minority government. Brexit Secretary David Davis predicted some parts of the Tory manifesto would now have to be "pruned" after the Tories lost their Commons majority. The Queen's Speech is written by the government and presents an outline of its planned legislation for the next Parliamentary session. BBC assistant political editor Norman Smith said the decision to delay it revealed an "ambiguity" about what would go in it - with several manifesto pledges expected to be watered down or dropped - but also the need for the Tories to "nail down" DUP support. A defeat would be regarded as a vote of no confidence in the new minority government, he said. Theresa May will face questions later from her backbenchers for the first time since Thursday's election. They are expected to raise concerns about her leadership style, and press for more details on talks with the DUP. Mrs May's new cabinet will also meet for the first time after a reshuffle. Speaking on BBC Radio 4's Today programme, Mr Davis said that while the Tory election campaign had been disappointing, Mrs May was a "formidable prime minister" and accused people speculating about her leadership of "the absolute height of self-indulgence". Labour leader Jeremy Corbyn has accused Mrs May of "squatting" in No 10, telling the BBC's Andrew Marr Show on Sunday that the country "cannot go on with a period of great instability". The PM finalised her cabinet with a small reshuffle, with Michael Gove returning to a ministerial role as environment secretary. Mr Gove, who took on Mrs May for the party leadership after David Cameron quit, was sacked by the PM in her reshuffle in July last year. The Conservatives lost their House of Commons majority in Thursday's snap election, going from 331 seats to 318, while Labour increased its number of MPs from 232 to 262. BBC political correspondent Iain Watson says the meeting with the committee had been brought forward by 24 hours, not because of panic within the party, but possibly as a way of avoiding it.(FA)