Forget the World Cup, the most-significant football tournament of the summer is set to take place at Knebworth, with the return of SonisBall.

It costs nothing and anyone can enter the five-a-side tournament by emailing sonispherefootball@gmail.com. All you need is a team name and four team-mates. If you don't have a team, but would still like to play, email the same address and we'll put you in touch with like-minded festival-goers. Team Sonisphere will be entering a team with some very special guests.

The tournament itself will take place on the afternoon of Friday 4th July with the exact time and venue to be confirmed. The winning team will receive "King For A Day' packages as prizes with the winners able to decide if they enjoy being a "King For A Day' on Saturday or Sunday.

Head here to learn more or peruse the rules. See you in the pit on the pitch!