BANGKOK (AFP) -- UK authorities have revoked the visas of ousted Thai Prime Minister Thaksin Shinawatra and his wife Pojaman, an airline official told AFP Saturday.

The official, speaking on condition of anonymity, said the British embassy had informed all airlines in an email on Friday not to allow the couple to board flights to the U.K.

"The British embassy sent an email message to all airlines operating from Bangkok on Friday that the British authorities had revoked the visa for Thaksin and Pojaman," he said.

The email is "general practice for all airlines, so no airline can take them on board to England from any port," he added.

Thaksin, ousted in a 2006 coup, fled to the U.K. in early August and has since been sentenced in absentia to two years in prison for corruption.

His exact whereabouts on Saturday were unknown, but local media reported he was traveling from China to the Philippines.

Embassy officials refused to confirm or deny the report.