Can anyone tell me more about det 40?

Question

i believe it was an intelligence unit used during the conflict in N.I

Answer 1

14th intelligence and security detachment commonly known as 'The Det' was an intelligence gathering undercover unit used during the troubles in Northern Ireland. Members usually served a two year stint and then went back to their parent units. The Det was unique among British special units in that it allowed women to join

Answer 2

Supposedly super top secret, and yet...  

Answer 3

Not Det 40 mate, your thinking of 14 Int,or "the det". They were used to infiltrate and gather info on Paramilitary organisations in N.I.

Now been amalgameted, and known as the Special Recconnaisance Regiment (SRR)