One of the doctors, the man arrested on the M6, was said to be a Jordanian-born doctor at the North Staffordshire Hospital in Stoke-on-Trent. He lived with his wife and baby in a rented house in Newcastle-under-Lyme, Staffordshire, where forensic officers were carrying out a detailed search last night. The doctor is suspected of having played a key role in the planning of the terror strikes. One of the two men overpowered as they attacked Glasgow Airport has 90 per cent burns and is too badly injured to be interviewed, but the second was being questioned last night. Police believe they are all part of a previously unknown Al Qaeda-linked cell made up of people of Middle Eastern origin. The doctor involved in the Glasgow attack is an Iraqi who is thought to have been granted asylum in the UK while a third suspect comes from Lebanon.