In a treasure-trove of documents recovered by Human Rights Watch from the disused office of ex-Gaddafi intelligence chief Moussa Koussa - openly welcomed as a defector to the UK - we now have written proof that MI6 were sending 'terrorist suspects' to Libya for rendition torturing.
A whole flow of similar communications reveal how Britain was briefing Libyan intelligence about opponents of the regime in Libya and abroad.
Many other papers disclose the cosy, cordial ties between Libyan and British intelligence in promoting Tony Blair's visits to Libya and how UK officials even helped write a speech for Gaddafi to assist his rehabilitation:
"The papers illustrate the intimate relations Mr Koussa and some of his colleagues seemingly enjoyed with British intelligence. Letters and faxes flowed to him headed 'Greetings from MI6' 'Greetings from SIS', handwritten Christmas greetings, on one occasion, from ' Your friend', followed by the name of a senior British intelligence official, and regrets over missed lunches. There were also regular exchanges of gifts: on one occasion a Libyan agent arrived in London laden with figs and oranges. "Meanwhile, Alex Thomson of Channel 4 News has recovered further evidence of Britain's dark weapons trade with the Gaddafi regime.
His report reveals the $165 million deal secured by military supplier General Dynamics UK, all facilitated by ex-UK Ambassador to Libya Sir Vincent Fean, following on from Blair's 'deal in the desert' with the regime.
The Cameron government has also been found operating a secretive Whitehall cell serving to undermine Gaddafi by seeking to manipulate and control the Libyan oil sector. International Development secretary Alan Duncan has been closely involved in the operation, liaising with giant oil company Vitol, a firm he was previously employed by.
In a standard rebuttal of this highly embarrassing evidence, Downing Street has denied any conflict of interest, claiming that Duncan was essential to helping officials on the ground 'understand the intricacies' of the oil market.
One can but imagine the political and media furore if, say, a Libyan or Iranian cell had been involved in plotting similar destabilisations inside the UK or any other Western country.
It all goes with the imperialist territory. When America, Europe and Nato - what Bill Blum calls "The Holy Triumvarate" - want a state 'called-in', questions of international law, recognition of sovereignty or just plain democratic conduct has no bearing:
As Libya's new order and the 'international community' decry Gaddafi's atrocities, it's worth reflecting on the crucial part that Britain and America have played in torture arrangements, oil deals and arms to that regime.
"If The Holy Triumvirate decides that it doesn't want to overthrow the government in Syria or in Egypt or Tunisia or Bahrain or Saudi Arabia or Yemen or Jordan, no matter how cruel, oppressive, or religiously intolerant those governments are with their people, no matter how much they impoverish and torture their people, no matter how many protesters they shoot dead in their Freedom Square, the Triumvirate will simply not overthrow them.
If the Triumvirate decides that it wants to overthrow the government of Libya, though that government is secular and has used its oil wealth for the benefit of the people of Libya and Africa perhaps more than any government in all of Africa and the Middle East, but keeps insisting over the years on challenging the Triumvirate's imperial ambitions in Africa and raising its demands on the Triumvirate's oil companies, then the Triumvirate will simply overthrow the government of Libya.
If the Triumvirate wants to punish Gaddafi and his sons it will arrange with the Triumvirate's friends at the International Criminal Court to issue arrest warrants for them.
If the Triumvirate doesn't want to punish the leaders of Syria, Egypt, Tunisia, Bahrain, Saudi Arabia, Yemen, and Jordan it will simply not ask the ICC to issue arrest warrants for them."
If Gaddafi ever does end up at the International Criminal Court, more of that evidence might well emerge, a troubling thought no doubt exercising Nato minds as they deploy every available resource to eliminate their former friend.