Downing Street said Monday’s summit would involve a “signing ceremony” for the peace plan, “marking a historic turning point for the region after two years of conflict and bloodshed”.

Sir Keir will thank Egypt, Qatar and Turkey for “bringing us to this point” as well as Trump, before calling for continued coordination to secure “swift progress towards phase two” of the truce.

No 10 added in its statement: “He will offer the UK’s steadfast support and engagement with international partners as we look to secure the ceasefire, get urgently needed humanitarian assistance into Gaza and secure a basis for a lasting peace and security.”

French President Emmanuel Macron will also attend, the Elysee Palace confirmed on Saturday, where he will “express his full support for the implementation of the agreement”.

Confirming the summit late on Saturday, a spokesperson for Egypt’s presidency said it was intended to “end the war in the Gaza Strip, strengthen peace and stability efforts in the Middle East, and open a new page in regional security and stability”.

Trump had told reporters at the White House on Friday that he would be travelling to the region on Monday, addressing Israel’s parliament the Knesset, before heading to Egypt.

He said: “We have a lot of leaders from all over the world coming too, they’ve been invited.”

Egypt’s foreign ministry had also said US Secretary of State Marco Rubio discussed arrangements for the summit with Foreign Minister Badr Abdelatty.

The ceasefire came into effect after the Israeli government approved the first phase of Trump’s ceasefire and hostage return deal on Thursday, following three days of indirect talks in Egypt.

The Israeli military said it had partially withdrawn troops from parts of Gaza and pulled back to an agreed position within the territory – though troops still occupy half of the Strip.