Listen to the full interview via the Off The Ball Football Show podcast.

This morning six people, including Blackburn Rovers striker DJ Campbell were arrested as part of a match-fixing inquiry.

It comes just 24 hours after The Sun on Sunday released footage of ex-Portsmouth defender Sam Sodje admitting that he had deliberately got himself sent off during a match last season.

Last month, there were more arrests and an alleged fixer even mentioned Ireland as a place where match-fixing had taken place.

The plot appears to be thickening and there is a danger that the recent events and revelations are just the tip of the iceberg.  

Tonight we spoke to David Hill, author of ‘The Fix: Organized Crime and Soccer and he believes that there is likely to be more bad news on the way.

"Last week in Belgium, there was an organisation called Federbet that came forward with the news that there had been at least five fixed matches in the last four months in the English leagues. I'm not sure about their credibility or their methodology. But we're just going to see more and more of these stories emerging," said Hall.

"I think this is a great shame  because the English FA and the Irish FA have been warned for years that they were facing an epidemic of this new form of match-fixing that is globalized sports corruption linked around the world to Asian syndicates. They've done very little effective work to prevent this."

Hill said that the key problem in fighting match-fixing is that one has to fight the "code of the dressing room". 

He called for an "integrity hotline" which allows players to report incidences of match-fixing anonymously in order to make it easier for them to be honest. 

"FIFA have actually done more effective work regarding this new form of match-fixing than either the English FA or Irish FA," said Hill, pointing out that English administrators are in denial about the issue.

And the scale of the problem is huge, affecting World Cup qualifiers and even the Champions League.

"The dirty secret at the heart of international football was that many times the players don't receive their salaries. Match-fixers are around at these big international tournaments, they're around at the Champions League particularly with the teams that don't stand a chance of getting out of the qualifying rounds. This is a problem and it's known about." 

Listen to the full interview via the Off The Ball Football Show podcast.

Main Image: Sam Sodje's red card against Oldham Athletic which has aroused suspicion