They had one shot to make everyone sit up and take notice of football kelong in the Britain.
To do this SI Sports Intelligence (SI), a sports fraud agency, had to make the exposure shocking and vivid in detail.
It chose to target a group that had alleged links to Wilson Raj for a sting operation and make a secret video of it, said SI officers whose lead led to the UK sting.
It resulted in the arrest of seven men (one of whom is a Singaporean) by Britain's National Crime Agency last week.
SI, a private company with less than five people, revealed details of the investigations and why this particular syndicate was targeted in an exclusive interview.
Said Mr Michael Pride, director of operations at Australia-based SI: "We knew that this major syndicate and its key players had not been properly exposed.
Our aim was to prevent more corrupt acts by some main syndicate members by running this investigation the whole way."
SI's seven-month self-funded probe took it to Britain, said a key investigator at SI, who wanted to be known only as John, 57.
John, who was previously from the Fifa security team, said: "We had no idea where it would end up (in Britain)...
We wanted to have real-time information of a fix from beginning to end."
One of the suspects, Singaporean Chann Sankaran, 33, was an associate of convicted match-fixer Wilson Raj Perumal.