Starmer has also repeatedly called on Hamas to release the remaining hostages they captured in the 2023 attack, and is expected to set out new sanctions on the Palestinian militants.
Lammy told the BBC on Sunday that the Palestinian Authority, the civilian body that governs in areas of the West Bank, had been calling for the move for some time “and I think a lot of that is wrapped up in hope”.
“Will this feed children? No it won’t, that’s down to humanitarian aid. Will this free hostages? That must be down to a ceasefire.”
But he said it was an attempt to “hold out for” a two-state solution.
Palestinian foreign minister Varsen Aghabekian Shahin told AFP last week: “Recognition is not symbolic.”
“It sends a very clear message to the Israelis on their illusions about continuing their occupation forever,” she added.
Hamas’s 2023 attack on southern Israel resulted in the deaths of 1,219 people, most of them civilians, according to an AFP tally of official figures.
Israel’s retaliatory campaign has killed at least 65,208 people, also mostly civilians, according to figures from the Gaza health ministry that the United Nations considers reliable.
Portugal said that it would also formally declare its recognition in New York on Sunday.
“By acting now, as the Portuguese government has decided, we’re keeping alive the possibility of having two states,” Portuguese President Marcelo Rebelo de Sousa said.
