A British volunteer is among seven people who have been killed by an Israeli air strike in Gaza.

The World Central Kitchen (WCK) workers died on Monday night when their car was struck by a missile in Deir al-Balah, the NGO said.

The workers were Polish, Australian, Palestinian and included a dual US and Canadian citizen.

They were travelling in two armoured cars emblazoned with the WCK logo and another vehicle, the aid organisation said. 

The convoy was hit as it was leaving its Deir al-Balah warehouse, after unloading more than 100 tons of humanitarian food aid brought to Gaza by sea, according to WCK. 

“This is not only an attack against WCK, this is an attack on humanitarian organisations showing up in the most dire of situations where food is being used as a weapon of war,” said Erin Gore, chief executive of World Central Kitchen.

“This is unforgivable.”

The Israeli military said it was doing a thorough review at the highest levels to understand the circumstances of what it called a tragic incident.

A UK Foreign Office spokesman said: “We are aware of reports of the death of a British National in Gaza and are urgently seeking further information.”