Common sense and decency prevails, as the House of Lords rules that evidence gained through torture cannot be used in court.
The duty not to countenance the use of torture by admission of evidence so obtained in judicial proceedings must be regarded as paramount and that to allow its admission would shock the conscience, abuse or degrade the proceedings and involve the state in moral defilement
The ineffectiveness of torture as a tool for anything has been well argued… but a couple of quick observations. First, the “ticking bomb scenario” is an unhelpful hypothetical construct. As David Luban says in the Washington Post, we give it credence only because we see so many examples of it in Hollywood. (via Clive). If it gets to the stage where a bomb is about to go off, and the only way we can discover it is by electrocuting a terrorists testicles… then I would say we’re already pretty much fucked anyway.
The other problem with the “ticking bomb” hypothetical is that it ignores the sheer amount of time and effort that goes into torturing people. If the CIA really are scheduling flights across the atlantic in order to torture their prisoners, then their intelligence gathering is clearly not being done with any sense of urgency.