The government will "impose some form of age or functionality restrictions" on social media for under-16s, Education Minister Olivia Bailey has said.

Ministers proposed further amendments on Monday evening as they sought to end the stand-off with peers over the Children's Wellbeing and Schools Bill.

The House of Lords had voted in support of a social media ban for under-16s for a fourth time on Monday afternoon.

Conservative shadow education secretary Laura Trott described the government's latest proposals in the Commons as a "huge step forward in keeping children safe".

MPs supported the government's motion by 272 votes to 64, with the bill now returning to the Lords for what looks to be the final consideration before it receives royal assent and becomes law.

Bailey did not give specific details about the action ministers would be taking but said the government was making a legal commitment that it "must" act once its consultation on whether the UK should introduce an Australia-style ban has concluded.

She told the Commons: "Let us be clear: the status quo cannot continue. We are consulting on the mechanism and that is the right thing to do.

"But we are clear that under any outcome we will impose some form of age or functionality restrictions for children under 16.

"I can also confirm that consideration of restrictions such as curfews will be in addition not instead of this."

Bailey said the government is "focused on addictive features, harmful algorithmically-driven content and features".

The minister said a "progress report" must be made three months after the legislation receives royal assent, adding this reflects "our intention to quickly produce a response following the consultation".

She added: "Following this we will have 12 months to lay regulations, but our firm intention is to move faster and the [Technology Secretary Liz Kendall] has been clear that we aim to do this before the end of the year."

Bailey said the government would, in "exceptional circumstances", have the option to extend the timeline by a further six months but they would have to explain to Parliament why this is needed.

Shadow education secretary Trott said: "We now have a commitment on the floor of the House from the government that they will impose an age restriction for children under-16.

"And this is in addition to, not instead of, any curfews.

"This is a huge step forward in keeping children safe and supporting parents in their fight against screens destroying children's lives."

Liberal Democrat education spokesperson Munira Wilson said the government has "moved a little" before questioning the timeline for action, noting it could take up to 21 months.

She said: "Countries around the world are taking action right now. This government has shown when it wants to move quickly on an issue it has the means to do so.

"Children's wellbeing and safety online, which is being compromised every single hour of every single day is a pretty damn good reason to move quickly and bring forward amendments acceptable to both Houses of Parliament, and most importantly to the people of this country."

Conservative former schools minister Lord Nash, who led calls for a social media ban in the House of Lords, thanked the government for saying it would act.

He said: "We will now all turn our attention - together- to making sure this is implemented as soon as possible in the best way to protect our children."

Lord Nash also thanked bereaved parents for their support in the campaign.

He said: "They didn't have to do this. They did it so that no other family would have to live through what they have lived through, and they have ensured that as a result every child in the country will be safer because of their work. I thank them for it."