What & Who discovers terrorist plots?

[davidbfpo]

A rare pointer to an accurate citizen part in discovering a plot; it is within an article on a new CT campaign in the UK, specifically trains:http://www.theguardian.com/uk-news/2...rrorist-attack

Launching the campaign, the chief constable of British transport police (BTP), Paul Crowther, said: earlier this month a man was sentenced for terrorism offences after being caught in possession of information about how to make bombs. “This was as a direct result of a rail passenger reporting suspicions to train staff".

I shall try and identify the case involved. Alas this failed, which I found odd - including asking an ex-BTP senior officer.