Some 221 MPs from across different political parties have joined forces to call on the Government to recognise a Palestinian state.
The MPs urge the Government to take the step ahead of a United Nations conference in New York next week.
This follows Franceâs announcement on Thursday evening it will formally recognise Palestine at a UN summit in September.
The MPsâ letter, co-ordinated by Sarah Champion â Labour chairwoman of the International Development Select Committee, said: âWe are expectant that the outcome of the conference will be the UK Government outlining when and how it will act on its long-standing commitment on a two-state solution; as well as how it will work with international partners to make this a reality.â
Parliamentarians from Labour, the Conservatives, Lib Dems, SNP, Greens, Plaid Cymru, SDLP and independents are among those who signed the letter.
Senior signatories include Labour select committee chairs Liam Byrne, Emily Thornberry and Ruth Cadbury, the Lib Dem leader Sir Ed Davey, as well as Tory former minister Kit Malthouse.
Rotherham MP Ms Champion acknowledged ârecognition alone will not end the suffering in Gaza or the rapid expansion of settlements and settler violence in the West Bankâ.
But she said it would be an important step on the path towards a two-state solution to end the war.
The Labour MP added: âRecognition would send a powerful symbolic message that we support the rights of the Palestinian people, that they are not alone and they need to maintain hope that there is a route that leads to lasting peace and security for both the Israeli and the Palestinian people.â
Ministers have faced growing calls to recognise a Palestinian state immediately amid mounting global anger over the starving population in Gaza.
Sir Keir Starmer said on Friday evening that such a move needed to be part of the âpathwayâ to peace in the Middle East, which he and allies are working towards.
âThat pathway will set out the concrete steps needed to turn the ceasefire so desperately needed, into a lasting peace,â the Prime Minister said.
He added: âRecognition of a Palestinian state has to be one of those steps. I am unequivocal about that. But it must be part of a wider plan which ultimately results in a two-state solution and lasting security for Palestinians and Israelis.
The PM also said: âThe appalling scenes in Gaza are unrelenting.
âThe continued captivity of hostages, the starvation and denial of humanitarian aid to the Palestinian people, the increasing violence from extremist settler groups, and Israelâs disproportionate military escalation in Gaza are all indefensible.
In a statement released on Friday alongside the leaders of France and Germany, the Prime Minister urged âall parties to bring an end to the conflict by reaching an immediate ceasefireâ.
Sir Keir, French President Emmanuel Macron and German Chancellor Friedrich Merz also called for Israel to stop restricting the flow of aid into Gaza.
Charities operating in Gaza have said Israelâs blockade and ongoing military offensive are pushing people there towards starvation, warning that they are seeing their own workers and Palestinians âwaste awayâ.
Israel says it allows enough aid into the territory and faults delivery efforts by UN agencies, which say they are hindered by Israeli restrictions and the breakdown of security.
As he left for Scotland on Friday, US President Donald Trump suggested that Mr Macronâs announcement that France would recognise Palestinian statehood was unimportant.
âWhat he says doesnât matterâ, Mr Trump told reporters at the White House.
Sir Keir will meet the US president during his five-day private trip to Scotland, due to kick off on Friday.
US-led peace talks in Qatar were cut short on Thursday, with Washingtonâs special envoy Steve Witkoff accusing Hamas of a âlack of desire to reach a ceasefireâ.
The deal under discussion is expected to include a 60-day ceasefire in which Hamas would release 10 living hostages and the remains of 18 others in phases in exchange for Palestinians imprisoned by Israel.
Aid supplies would be ramped up and the two sides would hold negotiations on a lasting truce.
Hamas-led militants based in Gaza abducted 251 people in the October 7 attack in 2023 that triggered the war and killed about 1,200 people.
Fewer than half of the 50 hostages still in Gaza are believed to be alive.
Israelâs war in Gaza has killed more than 59,000 Palestinians, according to Gazaâs Health Ministry. It does not distinguish between militants and civilians.
