by Stephen Grey, the journalist who first revealed details of secret CIA flights in the Guardian a year ago. More than 200 CIA flights have passed through Britain, records show.

He describes how one CIA pilot told him that Prestwick airport, near Glasgow, was a popular destination for refuelling stops and layovers. "It's an 'ask-no-questions' type of place and you don't need to give them any advance warning you're coming," the pilot said.

The CIA used planes of Air America, a group of private companies it secretly owned, and a second company, Aero Contractors. A CIA Gulfstream V jet, frequently used for the secret rendition of prisoners, flew to Diego Garcia, the British Indian Ocean territory where the US has a large base, the book says. Grey plans to publishmore than 3,000 logs of the CIA flights on the internet this week.

CIA pilots, sometimes using false identities and whose planes regularly passed through Britain, ran up huge bills in luxury hotels after flying terrorist suspects to secret locations where they were tortured. But they revealed their whereabouts and identities by indiscreet use of mobile phones and allowed outsiders to track their aircraft's flights.

On one occasion, CIA pilots and crew lived it up in Majorca after rendering Benyam Mohammed, an Ethiopian brought up in Notting Hill, west London, to Afghanistan where he was tortured. Benyam was detained in Pakistan early in 2002, and then flown to Morocco, where he says he suffered appalling torture. He is being held at Guantánamo Bay.

Benyam has said in a statement to his