In the programme, Aneel Munawar, an alleged member of India's notorious crime syndicate D Company, tells an undercover reporter posing as a businessman that certain England players agreed to manipulate the number of runs scored in the period, thereby assisting illegal bookmakers on the subcontinent in setting their odds.
It is claimed in the film that a wealthy investor in possession of prior information can make over £1m per game, while a corrupt player can earn six figures.
The England batsmen allegedly agreed to score fewer runs than the spread set for the spell by the bookies, while the last over of the 10 is designated a 'manda' — 'slow' in Hindi — meaning that no more than two runs will be scored.
Though the precise details of the alleged fix are not divulged, Al Jazeera quote the reaction of Chris Eaton, the sports integrity director at the International Centre for Sport Security and a former Interpol officer.
Given full access to the details of the alleged fixes at both Chennai and Ranchi, where Australia played India in March 2017, Eaton watched the relevant passages of play and said: "It's very compelling evidence. Clearly what he (Munawar) predicted took place exactly as he predicted.
"The Chennai and Ranchi Tests mentioned by Munawar are worthy of serious and transparent investigation by the ICC. The fact that he is able to accurately predict the end of two sessions brings their credibility into question."
Asked about the allegations after his team had lost the first Test to Pakistan at Lord's by nine wickets, Root said: 'I am aware that there is a documentary and it is outrageous that our players have been accused. All the players have been briefed by the ECB, and have been told that there's absolutely nothing to worry about.
"I've been told to strongly deny the allegations. It sounds quite ridiculous really. As a group of players we've got to let the people in charge look after this. It's for the ICC to sort out."
Coach Trevor Bayliss also described the claims as 'outrageous', while ECB chief executive Tom Harrison said: "There is nothing we have seen that would make us doubt any of our players.
"The information . . . has been discussed with all the England players. They emphatically deny the allegations, have stated categorically that the claims are false and they have our full support."
Cricket's Match Fixers includes a quote said to come from lawyers representing the three England players. It points out that Munawar is 'a known criminal', and adds: "For the batting team to fix scores to within such a degree of precision as alleged is highly improbable, if not practically impossible."
Al Jazeera made it clear that they believe no more than three England players and two Australians are involved. The Australian board said that "neither the ICC nor Cricket Australia is aware of any credible evidence linking Australian players to corruption in the game".
The ICC is unhappy that Al Jazeera failed to share information ahead of transmission, though it is understood the broadcasters will pass on more details to the game's governing body this week.
The ICC's anti-corruption boss Alex Marshall said in a statement he was "taking the allegations extremely seriously". He added: "A full investigation led by the ICC anti-corruption unit, working with full co-operation from all member countries identified in the programme, is under way to examine each claim made."
The show also contains footage of Gaurav Rajkumar, an advertising executive who claims to be setting up a Twenty20 tournament in the UAE solely for the purposes of match-fixing.
The proposed four-team competition would take place over 10 days, with non-corrupt players earning around £1,000 per match, and those involved in fixing receiving between £35,000 and £40,000 a game.
