Crispin Blunt had urged fellow MPs to support his motion, but said "in order to protect colleagues from retribution" from the Speaker he would only list names of supportive MPs if more than 100 were prepared to put their names to the motion.

As this figure of 100 MPs has not so far been reached, the motion appears in Mr Blunt's name only.

Mr Blunt says many MPs "fear the consequences of being against a Speaker, who has such influence over their Parliamentary life".

"Some will only support a motion if it was certain to succeed in removing the Speaker," he adds.

Conservative MP seeks to oust Commons Speaker John Bercow

Just a bit more on those government appointments. The post of Middle East minister at the Foreign Office is still vacant. Alistair Burt resigned on 25 March to vote against the government over Brexit.

Image source, HoC

Conservative MP Philip Hollobone says people must be allowed to protest, but he objects to encouraging school children to go on strike.

"Why can't they protest at the weekend?", he asks, adding that education is "very important".

Energy Minister Claire Perry replies that he makes a "very important point".

"We need the climate engineers, the geophysicists, the scientists of the future - those are skills that you will learn best by engaging in education", she says.

Greta Thunberg - the young activist currently sitting in the Commons watching the proceedings - has encouraged thousands of children around the world to walk out of their classrooms over climate change.

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Image source, HoC

Green MP Caroline Lucas praises the protesters and says there has been "more climate leadership on the streets than in this chamber".

She asks the minister to commit to "stress testing" new manifesto pledges to ensure they do not contribute to climate change.

Claire Perry says the MP should "acknowledge the fact that the country has led the world in this particular area".

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Image source, HoC

SNP climate justice spokesperson Chris Law says Scotland "outperforms" the UK and is a world leader in the transition towards a lower carbon economy.

He asks the minister to increase efforts "to help UK figures come into line with Scotland".

Claire Perry says much of the change in Scotland has been as a result of "UK taxpayers and UK policy".

She adds that it is not only in Parliament that she is being asked to act on climate change.

"I only have to go home and have my own children tell me what more we need to do and ask if they can go on protests," she says.

She suggests it would be "easier to tell mum over a cup of tea".

"But it's more fun to protest," she adds.

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Image source, HoC

Shadow international trade secretary Barry Gardiner says the right to protest is "one of the foundations of our freedom".

He says avoiding a climate "catastrophe" will require a "complete rethink" in how the economy is run. He asks whether ministers will join Labour in declaring a "national environmental and climate emergency".

In response, Energy Minister Claire Perry says she shares the commitment to the right to protest, which she calls a "wonderful freedom".

She says the government will take "tough decisions" to "lead the world" when it comes to phasing out the use of coal.

Image source, PA

But Labour's spokesman says "fundamental issues" remain between his party and the government despite weeks of talks.

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Image source, HoC

Labour's Ed Miliband says politicians need to "raise our game and show we can act".

He calls on the government to declare a climate emergency, deliver a British green new deal and establish a citizens' assembly to involve the public in tackling climate change.

"If we do not act, people will say you knew the facts but you did not do enough."

On the subject of disruption caused by Extinction Rebellion, minister Claire Perry says: "I disagree with the methods, not the message."

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Business Minister Claire Perry responds to Ed Miliband's question, and she begins by also welcoming Greta Thunberg.

She says "we tried very hard to meet personally" but diary problems meant it wasn't possible.

Turning to the question, Ms Perry sets out progress the UK has made in reducing carbon emissions and making "huge progress on plastics-free activity".

On Extinction Rebellion, she says "although the protests have been respectful and good-natured they have caused disruption for hard working Londoners."

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Image source, PA

Former Labour leader Ed Miliband now asks an urgent question on climate action and Extinction Rebellion.

Extinction Rebellion activists have held demonstrations in cities across the UK calling for politicians to act on climate change. Some have been unhappy with the disruption to businesses and transport they have caused.

The group wants the UK to enact legally binding policies to reduce carbon emissions to net zero by 2025.

Read more on Extinction Rebellion, what they want and whether it is realistic.

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Justice questions end and before the first urgent question begins, Speaker John Bercow takes a moment to welcome 16-year-old climate change activate Greta Thunberg, describing her as an "enthusiastic and dedicated campaigner".

He tells MPs that he is "very conscious there are different views on these matters", but adds that "across this House we all believe in encouraging young people to stand up and speak up."

Image source, EPA

Extinction Rebellion activists in London are inviting MPs to talk about environmental policies.

Greta Thunberg - who inspired children around the world to walk out of school in protest over climate change - has been visiting Parliament. The 16-year-old urged politicians to listen to climate scientists.

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Image source, HoC

Shadow justice minister Imran Hussain asks whether the decision to take HMP Birmingham back into public ownership means the end of the government's "failed prison privatisation agenda".

Prisons Minister Rory Stewart says the prison was "not preforming properly" but the private company running it, G4S, has done a good job running prisons elsewhere.

The government is "not ideological on this", and the private sector "can play a role" in the running of prisons, he adds.

Speaker John Bercow tells MPs that the Commons will observe a minute’s silence later to remember the victims of the bomb attacks in Sri Lanka.

This will take place after today’s two urgent statements and before the first of the three ministerial statements, he says.

Image source, AFP/Getty Images

Journalist Rachel Johnson - sister of Boris - and ex-BBC correspondent Gavin Esler are among the candidates standing for Change UK.

Formerly The Independent Group, the party is made up of ex-Labour and Tory MPs who quit their parties.

Hello and welcome to our coverage of the House of Commons today, as MPs return from their Easter recess.

Business will get under way at 14.30 BST, when Justice Secretary David Gauke will take questions during a scheduled scrutiny session.

After this there are two urgent questions: on the ongoing climate change protests by the Extinction Rebellion group, and the delay in awarding the south-eastern railway franchise.

Government ministers will also be making statements on the Easter bomb attacks in Sri Lanka, the killing of journalist Lyra McKee during rioting in Northern Ireland, and climate change policy.

After this MPs will debate a number of pieces of Brexit-related secondary legislation.