How much harm did the North Vietnamese suffer due to the disclosure of their Torture and Murder? Remember the fate of the Defenders of Dien Bien Phu?
What actions did the British take in wake of that?
Whilst not wishing to comment on this present matter, the CIA, reporting in a diplomatic cable, were shocked to find the British did not use torture during the Emergency in Malaya (1948-1960). Several police were prosecuted for using 'Third Degree' because it was a civil Emergency and torture, certainly in the eyes of intelligence and Special Branch Officers, was unpleasant, unnecessary and counter-productive.
Typically, after several hours in 'disorientation rooms' [non-right-angled rooms, noise], the 'shock of capture' was exploited by offering hot baths, food, drink, cigarettes to the captured insurgents. The success rate in turning insurgents and TST couriers was quite remarkable. As usual, the interviewers exploited motivations - family, money, waivering ideological beliefs - as well as the lure of good food and drink. Women insurgents - often captured working as couriers - were regarded as particularly difficult to turn and it was found that if they were offered a decent hair do and manicure, they would be more amenable for working for the Government. There are a number of very good open-source studies on this aspect of the campaign.
I appreciate that all COIN and CT campaigns are different, but certainly during this particularly brutal campaign, torture was not used by the Government side.