The leaders of the world's top industrialised countries are united in their support against terrorism, British Prime Minister Tony Blair said at the Group of Eight (G8) summit venue in Scotland.

London under attack
Speaking live on television from a reception room at the Gleneagles golf resort, Blair said G8 leaders condemn the series of bomb attacks in London early Thursday which left 12 people dead and scores of others injured.

He said Britain, Canada, France, Germany, Italy, Japan, Russia and the United States had had "some experience of the effects of terrorism" and "will not allow violence to change our societies."

Blair said it was "reasonably clear" that multiple blasts aimed at public transport in London were the work of terrorists.

"All the leaders, as they will indicate a little bit later, share our complete resolution to defeat terrorism," he said.

The prime minister said: "It is particularly barbaric that this has happened on a day when people are meeting to try to help the problems of poverty in Africa and the long-term problems of climate change and the environment."

Britain's Prime Minister Tony Blair flanked by US President George W. Bush and French President Jacques Chirac speaks to the media from the G8 Summit in Gleneagles.

He finished by saying that Britain and its allies were determined to defend their values and way of life, and that extremists "will will never succeed in destroying what we hold dear in this country".