UK Prime Minister Rishi Sunak tells Parliament the latest US-UK strikes in Houthis in Yemen were "self defence"
The US and UK hit eight targets overnight, following another set of raids earlier this month
Sunak says the UK and US acted "in line with international law, in self defence, and in response to an immediate threat"
He says there is an "ongoing and imminent threat" from the Houthis
And he also says there is "no link" between the actions in the Red Sea and Israel's war in Gaza
Responding to Sunak, Leader of the Opposition Keir Starmer says Labour backs the UK's military action
The UK says the Houthis have launched 12 attacks on shipping in the Red Sea in the past 10 days alone
The Iran-backed Houthis have been targeting ships they say are linked to Israel and the West
Iran's foreign minister says the country has warned the US that their strikes in Yemen are a "strategic mistake"
Watch moment fighter jets take off for Yemen strikes
The UK and US have released footage of their aircrafts used on latest strikes against the Houthis.
We're sending Houthis clearest possible message - Cameron
A little earlier, UK Foreign Secretary David Cameron gave a brief statement on the overnight strikes in Yemen. Here's what Lord Cameron said:
The Houthis’ military spokesman has now issued a statement saying the US and UK carried out 18 strikes on Yemen in total, including 12 on the capital Sanaa and its surrounding province.
Yahya Sarea also said there had been three strikes in the Red Sea province of Hudaydah, two in the central province of Taiz and one to the east in the Bayda province.
“These attacks will not go unanswered or unpunished,” he warned in a post on X.
He did not mention whether the strikes caused any damage or casualties.
Houthi strikes: Explosions heard in Yemen's capital
Rumblings were heard in the city of Sanaa overnight as US and UK forces carried out strikes on Houthi targets.
Overnight, Houthi-run Al Masirah TV reported that the air strikes targeted three locations in the area in and around the capital, Sanaa - al-Hafa camp, in the south of the city; the northern area of Bani al-Harith; al-Dailami air base, about 15km (9 miles) to the north; and the Saraf area, 7km to the north-east.
It said there were also strikes in the central province of Taiz – the al-Janad area, 20km to north-east of the city of Taiz; and Mawza, to the south-west.
The Radaa area of Bayda province, which is located between Sanaa and Taiz, was also targeted, it added.
Houthi Political Bureau member, Hezam al-Asad, told Qatar-linked Al-Araby al-Jadeed TV that the strikes had hit open spaces and former military camps.
Asad also said Houthi forces would continue to target "Israeli ships".
The strikes were carried out hours after the Houthis’ military spokesman announced that the group had fired missiles at the US-flagged cargo ship Ocean Jazz in the Gulf of Aden, and warned that "any new aggression will not go unpunished".
"The Yemeni armed forces persist with their military operations: enforcing a blockade on Israeli navigation in the Red and Arabian Seas until a ceasefire in Gaza is achieved, and the siege is lifted," Yahya Sarea said.
Gerald Michael Feierstein, former US ambassador to Yemen, has been speaking to BBC Radio 4's Today programme about the US-UK oint mission against the Houthis in Yemen.
He says the latest airstrikes were intended to deter the Houthis from continuing military action in the Red Sea, or to reduce their capacity to attack.
"Whether it's achievable or not is another question. In my view, it's unlikely that they would be able to reduce Houthi capabilities to the extent that the Houthis would no longer be able to carry out these attacks," he tells BBC Radio 4's Today programme.
He says the Houthis believe that they can repair or replace any damage caused by the strikes.
Henry Zeffman
Chief political correspondent
It is understood that Labour wants the government to make a statement to Parliament today about last night's strikes against Houthi targets.
Unlike the first set of strikes 12 days ago, the government did not brief Sir Keir Starmer beforehand.
Labour would like a confidential briefing about the operation to take place this morning.
If one has not taken place by the time of any statement in Parliament, Labour will push for more detail on the aims of the strikes, what measures were taken to protect civilian lives, and how the risks of escalation are being managed.
Labour also wants the government to publish a summary of its legal advice.
Cameron says "we shouldn't accept" the Houthis' narrative that this is to do with Gaza, and that the Yemeni government does not accept this either.
The foreign secretary says the Houthis are indiscriminately attacking shipping in the Red Sea and trying to close a vital sea lane.
Cameron adds that in Gaza, the UK and US want to see the swiftest possible end to the conflict.
David Cameron says there have been more than 12 Houthi attacks on shipping in the Red Sea since the first joint US-UK strikes 10 days ago.
He says Britain and the US want "to send the clearest possible message" that their words will be supported by action.
Asked how confident he is that the attacks are working, Cameron replies that he is confident the strikes have made further progress in degrading the Houthis ability to launch attacks.
He adds it is the Houthis escalating tensions in the region.
We've just been hearing from UK Foreign Secretary David Cameron.
He says last night four RAF Typhoons took part in military action to "further degrade" the Houthis' capacity to carry out attacks on shipping in the Red Sea.
He says what the Houthis are doing is "unacceptable" and "illegal" and threatens "the freedom of navigation".
He says the UK and the US are building a coalition of support "to back the steps we've been taking".
UK Foreign Secretary David Cameron is giving a statement now, after the UK and US launched a fresh wave of air strikes against Houthi targets in Yemen in a joint operation.
We'll bring you the key lines from Cameron here, so stay with us.
The Houthi rebel group has gained notoriety in recent months following missile attacks that have disrupted global trade.
The group are backed by Iran and control a large part of Yemen, on the Red Sea coast.
Since the war in Gaza started, the Houthis hijacked a commercial ship and fired missiles at more than a dozen ships in the Red Sea.
The Houthis say they are targeting ships which are Israeli-owned, flagged or operated, or which are heading to Israeli ports. However, many have no connections with Israel.
They also claim to be acting in solidarity with Palestinians in Gaza.
Image source, .The UK's ministry of defence has released these photos of military aircraft involved in the overnight operation in Yemen.
The fighter jets took off from the RAF Akrotiri military airbase in Cyprus.
Image source, PA Media
Image source, PA Media
Image source, PA MediaUK Defence Secretary Grant Shapps described the fresh wave of strikes in Yemen as "self defence" against the Houthis' "intolerable attacks" on merchant shipping.
"Aimed at degrading Houthi capabilities this action will deal another blow to their limited stockpiles and ability to threaten global trade", he wrote on X.
It is understood that neither UK Commons Speaker Sir Lindsay Hoyle nor opposition leader Sir Keir Starmer were briefed in advance about the new strikes.
The US and UK’s latest round of airstrikes against Houthi targets in Yemen were to "defend lives" and protect "the free flow of commerce", a joint statement issued by the Pentagon says.
The statement confirmed "an additional round of proportionate and necessary strikes" against the Houthis.
"Our aim remains to de-escalate tensions and restore stability in the Red Sea, but let us reiterate our warning to Houthi leadership: we will not hesitate to defend lives and the free flow of commerce in one of the world's most critical waterways in the face of continued threats," it added.
This is the eighth strike by the US against Houthi targets in Yemen.
It is the second joint operation with the UK, after joint strikes were carried out on 11 January.
The joint statement said the strikes were carried out with support from Australia, Bahrain, Canada, and the Netherlands.
Nathan Williams
Live reporter
Good morning and welcome to our coverage after the US and UK conducted another wave of joint airstrikes against Houthi targets in Yemen.
Monday's strikes hit eight targets, including an underground storage site and Houthi missile and surveillance capability, the Pentagon said.
The Houthis - who control much of the country - have been targeting ships they say are linked to Israel and the West that travel through the important Red Sea trade route.
The US and UK said they were trying to protect the "free flow of commerce".
We'll be bringing you the latest developments, reaction and analysis on this page, so stay with us.