Britain’s national threat level was raised to “critical” after three attempted car bombings last week in London and Glasgow. Police and intelligence officers confirmed that there was a direct link between the attack on Glasgow airport last Saturday and two attempted car bombings in London last Friday. This confirmed the reality of a renewed UK offensive by Islamist extremists. Prime Minister Gordon Brown summoned intelligence chiefs and ministers to the Cobra emergency committee in Whitehall to discuss the security situation. It was agreed to raise the threat level to the highest degree possible, a decision that confirmed another attack was expected soon. The first two “Iraqi-style” car bombs had been found in London by chance in the early hours of Friday morning.