Britain has expelled two more Libyan diplomats from London days after it ordered the country's ambassador to leave, the Foreign Office said on Thursday.

"I ordered the expulsion of the two diplomats on the basis that their activities were contrary to the interests of the UK," Foreign Secretary William Hague said.

The expulsions were ordered on Wednesday and the diplomats and their families have until May 11 to leave Britain.

"We keep the status of the Libyan Embassy and its staff under constant review," Hague said in a statement. "I judged that the behaviour of these individuals had become unacceptable, and that they should therefore be declared persona non grata." On Sunday, Libyan ambassador Omar Jelban was given 24 hours to leave Britain after the British government said its embassy in Tripoli had been attacked.

In February, Britain announced that it had closed its embassy in Tripoli and evacuated staff because of the "deteriorating situation" in Libya.

Then in March Britain expelled five Libyan diplomats in protest at the Libyan authorities' actions and because they could pose a threat to national security.

Reuters