Britain has revoked visas for former Thai Prime Minister Thaksin Shinawatra and his wife who had fled to London in August to avoid corruption charges, a Thai official has said.
The move raises the question of whether and where the former Prime Minister could find a new base outside Thailand.
The reason for the visa withdrawal is not yet known.
Mr Thaksin, who spent most of his time in exile in London after he was ousted in a 2006 coup, was travelling in China.
The billionaire former telecoms tycoon was sentenced to two years in jail last month for breaking a conflict of interest law by getting involved in a government agency's sale of a piece of prime land in Bangkok to his wife.
Thai prosecutors have been urging London to extradite the former Prime Minister, who won two landslide election victories, but was ousted in a 2006 coup on accusations of corruption and abuses of power.
