After the explosion of a car at Glasgow airport, security measures have been stepped up at other British airports, Sky News reported on Saturday evening according to DPA. Cars were no longer allowed near terminal buildings at Edinburgh and Newcastle airports, it said. Security personnel assumed the incident had been a terrorist attack, according to British media. Prime Minister Gordon Brown meanwhile called another meeting of the government's crisis committee, Cobra, which had already met at lunchtime to discuss Friday's two foiled car bomb attacks in London. Brown also talked to the Scottish Prime Minister Alex Salmond about the situation in the north of the country. Britain's head of state, Queen Elizabeth II, was in Edinburgh Saturday for the opening of the new Scottish Parliament.