Not sure you are right there, speaking as a Brit. Torture was used on internees, as detailed in the book Cruel Britannia by Ian Cobain. I believe that torture also took place in Guantanamo, but I don't know whether it was worse. (Black prisons in other places like Baghram are another matter.)

In any case, in Guantanamo, the detention without trial is almost worse and more disgraceful than the torture. How can the democracies hold our heads up if this is how we behave?