It turns out that MPs and intelligence officials may well have known of the Mi5 using torture (incidentally against British citizens, although this does not alter the severity of the crime)- and concealing the evidence of this torture from the British public.
link to the guardian article
If this is proved to be the case then Jack Straw (then foreign Secretary, now Justice Secretary for heavens sake) and Milliband- current foreign secretary- should resign with immediate effect. As should any MP who saw these documents and has maintained their silence.
No-one who sanctions the use of torture should hold public office in Britain, not if, as a society, we are serious about the rule of law and the maintenance of human rights.