London: Russia has expelled a British diplomat and accused him of spying.

The UK’s ambassador to Moscow has also been summoned by the Ministry of Foreign Affairs.

The moves come amid escalating tensions between Moscow and western countries over Ukraine. The UK diplomat has had his accreditation revoked and must leave the country, news agency TASS reported, citing Russian security service the FSB.

The agency claimed he had provided false information to enter the country and alleged he was engaged in spying and sabotage, according to the report.

It said it had found evidence the diplomat was involved in "reconnaissance and subversive work that threatens the security of the Russian Federation.” The diplomat worked at the embassy in Moscow and had replaced one of six British intelligence officers who were expelled in August, it said. (PA Media/dpa)