London - A leading British thinktank Friday warned of the "grave threat" of social unrest in response to the global recession over the next two years.

The Economist Intelligence Unit (EIU), in a paper published Friday, rated the risk of upheaval that could "disrupt economies and topple governments" as "high or very high" in 95 countries.

London  - Multinational oil giant Total is liable for damages caused by the explosion at a major oil depot in Britain in which 43 people were injured, the High Court in London ruled Friday.

The 2005 explosion at the Buncefield oil depot in Hemel Hempstead, in the county of Hertfordshire, north of London, was the biggest blast in Europe since the end of World War II.

London  - The first giant tanker carrying liquefied natural gas (LNG) from Qatar arrived in Britain Friday amid noisy protests from campaigners who oppose the project on environmental and safety grounds.

The consignment, on board the 316,000-ton Tembek, is the first to be delivered to the deep sea port of Milford Haven, on the coast of Wales in south-west Britain, under a long-term contract signed with Qatar.

London  - Arsenal forward Theo Walcott is likely to be out for several weeks after injuring his knee in training on Friday.

Walcott will miss Arsenal's Premier League trip to Newcastle United on Saturday, and is almost certain to be out of England's friendly against Slovakia and the World Cup qualifier against Ukraine four days later.

"He will have a scan on his knee today and we are a bit surprised and worried because he was in very good form coming back," said Arsenal boss Arsene Wenger.

London - British police face an "unprecedented challenge" from protest groups planning to disrupt the summit of Group of 20 (G20) leaders in London early next month, the officer in charge said Friday.

Commander Bob Broadhurst said 2,500 officers would be deployed to stop environmental and anarchist protestors from bringing the centre of London to a "standstill," as they had vowed to do.

The police operation was expected to cost up to 10 million pounds (14.4 million dollars), he predicted.

London  - Outspoken British anti-war member of parliament (MP) George Galloway Friday denounced as "outrageous" a decision by the Canadian authorities to refuse him entry on the grounds of national security.

Galloway, a former Labour politician who has now set up his own political party, said in London that he would not accept the ban imposed ahead of a speech he had planned to give in Toronto.