British police are searching for suspects and the military is reviewing security arrangements after pro-Palestinian activists broke into a Royal Air Force Base and damaged two planes with red paint, officials said Friday.

The group Palestine Action said two members entered RAF Brize Norton on Wednesday and used electric scooters to approach the Voyager jets, which are used for air-to-air refuelling.

The duo sprayed red paint into the planes' turbine engines with repurposed fire extinguishers and caused further damage with crowbars, according to the group, which released video footage appearing to show an individual approach a jet and spray paint into the engine.

The activists left the base without being detained, Palestine Action said.

The group said in a statement that "despite publicly condemning the Israeli government, Britain continues to send military cargo, fly spy planes over Gaza and refuel US/Israeli fighter jets." It called the UK "an active participant in the Gaza genocide and war crimes across the Middle East."