British planes "are in the sky" in the Middle East "to protect our people, our interests and our allies," Prime Minister Sir Keir Starmer has said, BBC reported. 

In a pre-recorded statement televised on Saturday afternoon, Starmer said protections for British bases and personnel had been stepped up to their highest level.

The US and Israel launched strikes across multiple Iranian cities including capital Tehran on Saturday morning, after negotiations to limit Iran's nuclear programme ended without an agreement. The UK did not participate in the strikes, according to BBC.

Earlier, the PM released a statement along with the leaders of France and Germany, calling for Iran to "refrain from indiscriminate military strikes".