It added: "We do not believe that officers should enter into intimate, physical sexual relationships while using their false identities undercover without clear, prior authorisation, which should only be given in the most exceptional circumstances.
The report by John Vine, the external chief inspector of immigration, is into the row last autumn which led to the then head of the UK border force, Brodie Clark, quitting after he was accused of acting as a "rogue civil servant" by adopting "lighter touch" passport checks at Britain's airports and ports without clear ministerial authorisation.
He also believes the UN security council resolution passed last week at the request of the French government after the Paris attacks was an expression of solidarity with the French, as opposed to clear legal authorisation from the UN for military action under chapter 7 of the UN charter.
The email claimed the UN security council resolution authorising "all necessary measures" to defeat Isis did not give the "clear and unambiguous authorisation".
UN security council resolution 2249, passed in the aftermath of the Paris attacks, does not give clear and unambiguous authorisation for UK airstrikes.
But the detail of the bill makes clear that the authorisation arrangements for internet connection records will remain exactly the same as the current 517,000 requests for communications data made last year.
If advocates of intervention do not agree with the Labour conference's condition of "clear and unambiguous authorisation for such a bombing campaign from the United Nations", then they should simply say so, rather than trying to distort the very clear legal picture.
But on Wednesday Ban's special envoy for Syria, the Algerian diplomat Lakhdar Brahimi, warned that "international law is clear" about security council authorisation being required for any military action.
Instead of exerting political pressure with the goal of driving up the number of substances on the candidate list or in the authorisation procedure, clear signals would be necessary instead, reassuring the actors that the mentioned uses will remain possible in the future.
