The England squad was unveiled last week and the competition is due to begin in just 16 days time, but Which? has warned fans to be wary of Rugby World Cup ticket scams.
The consumer's association has revealed concerns in relation to tickets being sold by one particular website.
According to the Independent, GetSporting.com is not an official re-selling site and is consequently allowing punters to buy 10 tickets at a time even though official rules only allow four.
City of London police are currently investigating the issue and working with England Rugby to try and prevent the sale of counterfeit tickets.
Detective chief superintendent Dave Clark said: "Anyone involved in these practices should not be surprised to receive a knock on their door before, during or after the tournament."
Despite the excitement surrounding the tournament, there are still around 50,000 tickets available to 27 of the matches in the tournament, City AM reports.
Matches will be taking place at stadiums around the country including Twickenham, Wembley and the Olympic Park.
Richard Lloyd, Which? executive director, said: "With fans trying to get last minute tickets to Rugby World Cup 2015, it's an ideal time for ticket scammers to try to make a fast buck. We expect the authorities to take swift action against dodgy sites and we advise people to keep their wits about them. If an offer looks too good to be true, it probably is."
If you are concerned about the ticketing issues, you can go to the event's website to learn more about the official vendors.
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