This article has nothing to do with divulging secret sources or the
methods used by MI5. Don't pay any attention to the interview given by
Nigel West, also known as Rupert Allason. He is known as being
somewhat an exaggerator of the truth, spinner of webs of deceit.
See url: https://en.wikipedia.org/wiki/Rupert_Allason
if you want to know the truth, the whole truth and nuffink but the
truth...visit url: http://www.nigelwest.com/
Where you can learn all about how he does it from reading his articles
and books on the subject. A real expert...