[JURIST] UK Prime Minister David Cameron [official website] on Monday gave a speech [text] on the situation in Libya [JURIST backgrounder], announcing an investigation into collusion between MI6 [official website], the overseas British Security Service, and the Libyan Security Services regarding the treatment of former Guantanamo Bay [JURIST news archive] detainees. Accusations of M16 sending detainees to knowingly be tortured by Libyan security services prompted Cameron to instruct the Detainee Inquiry [official website], created last July [JURIST report] to examine…