Former detainee 'shocked' at Libya-MI6 claims
5 September 2011 Last updated at 23:45 BST
Documents uncovered in the Libyan revolution allege that British intelligence shared information about Libyan dissidents given refuge in the UK with the Gadaffi regime.
The documents may also disclose British involvement in the practice of rendition.
Former Guantanamo detainee Omar Deghayes told Newsnight he was "sad and shocked" at the alleged links.