Asked if GCHQ could guarantee it does not operate beyond UK law, Sir Iain Lobban replied: "I can give you that guarantee. I believe that to be true. We are subject to the law."
More top news
Minh Quang Pham was sentenced in a US court for three counts of terrorist-related activity.
The actor was told he must stay 100 yards away from Amber Heard after she took out a restraining order against him.
Dr Henry Heimlich saved a woman choking on a hamburger at his retirement home.