The last British resident held at Guantanamo Bay says former Prime Minister Tony Blair and other senior officials should be granted legal immunity to reveal what they knew about British complicity in abuses during the so-called war on terror.

Shaker Aamer was freed in October after almost 14 years at the U.S. detention facility. He says he was tortured and that British intelligence agents knew of the abuse.

Aamer told ITV News "we need to hear the truth" from Blair and others but "you are not going to get the truth from these people if they are scared."

In an interview broadcast Monday, Aamer said "nobody should be prosecuted because of what happened in the past, especially if we try and prevent it from happening in the future."