The foreign secretary has further strengthened travel warnings to Indonesia following new intelligence about the risk of terror attacks.

Jack Straw told the Commons on Monday that the government had not received specific intelligence that would have been able to prevent the terrorist attack in Bali which left hundreds dead and is believed to be the work of Islamic extremists.

"I dearly wish there had been intelligence that could have prevented this atrocity, but the answer sadly is that there was none,'' he said.

"Further attacks can, sadly, not be ruled out.''

The Foreign Office's new warning urges tourists to Indonesia, Vietnam, Singapore, Laos, Cambodia and Brunei to take care visiting nightclubs, bars and restaurants. It also warns that British and international schools in the region may be a target for terrorists.

Straw told MPs that his department would meet the costs of bringing British victims back to the UK where insurance cover was missing and admitted some families of the victims had been let down because of a lack of embassy staff in Indonesia.

"I am very sorry that shortcomings in getting sufficient extra staff on the ground in Bali early enough last week exacerbated the terrible burden the families were under," he said.

For the Conservatives, shadow foreign secretary Michael Ancram said Baroness Amos had been right to go to Bali but called for a report into what intelligence the government had received and when it had been given.

Ancram told the Commons that specific travel advice had been issued by the US government.

"Why on Earth, if Britain had the same information, didn't we issue the same warnings to our citizens at the same time?''

Straw rejected the criticism, saying that travel advice given by the US, the UK and Australia had been essentially the same in that there was no warning against travelling to or staying in Bali. He revealed that six key US diplomatic staff had been on holiday in Bali at the time of the bomb attack.

He argued that if the foreign office acted on every piece of intelligence the result would be that the world would be "shut down".

A generic threat had been received in late September but it covered 55 per cent of Indonesia's land mass and a later warning made no mention of Bali, Indonesia or South East Asia, said Mr Straw.

The foreign secretary, in a bid to pacify MPs, told the Commons that details of all intelligence received prior to the Bali blasts will be given to the Intelligence and Security Committee to be assessed.

The Liberal Democrat foreign affairs spokesman Menzies Campbell welcomed the handing over of intelligence reports to MPs but warned it should report back quickly.

Campbell also said it was important that the Balinese were not forgotten in the aftermath.

"We must not allow our undiminished sense of horror or our natural anxiety of for British citizens to stand in the way of a proper understanding of the consequences for the people of Bali, particularly in the long-term," he said.