The MacIntyre Undercover team filmed violence in Copenhagen

The programme showed him accompanying Mr Marriner on a trip to Copenhagen where Chelsea were playing in a Uefa Cup game.

The court heard there had been sporadic incidents of football-related violence involving Chelsea fans before and after the game.

The jury was shown clips of secretly filmed video in which Mr Marriner talked about a confrontation between Chelsea and Aston Villa supporters at Victoria Station, in London.

Mr MacIntyre also described how he rented a Mercedes to drive Mr Marriner and Mr Frain to an away game at Leicester.

Dashboard

He was wearing a secret microphone and a remote control camera was hidden in the dashboard of the car.

Mr MacIntyre said: "What was being discussed was the co-ordination of other coaches of supporters and making contact with Leicester.

"This was about the organisation of violence that day. I have no doubt of that and I was very scared," he said

On Wednesday Michael Oliver, who represents Mr Frain, told the court the programme had used "skilful editing" to create a misleading impression.

"The team spent a year trying to catch any of the targets that they had in any violence.

'Unfairly implicate'

"You may think that they completely failed in the course of a whole year and were deeply disappointed."

Mr Oliver said Mr MacIntyre had used the combination of his script and carefully edited pictures to unfairly implicate the defendants.

On Wednesday BBC producer Philip Clothier denied the programme was the result of "fraud" and "brilliant editing techniques".

Michael Wolkind, QC, for Marriner, had claimed fraudulent methods were used to prevent the investigation turning into a "flop".

The jury also heard excerpts from Mr Marriner - which were not used in the programme - in which he said: "I'm not interested in football violence. The 80s have gone. You have got to get on with your life."

The case continues.