A teenager mad about motorcycles has beaten a field of experienced riders to one of the top slots in a Supercross event.

Jack Grover, 15, was competing for the first time in the sixth annual British International Supercross competition at Sheffield Arena.

The event involves riding round a track on a bike and navigating a series of difficult jumps, and he managed to finish second overall.

The active teenager has been taking part in motocross since he was ten and has only just decided to have a go at Supercross.

Jack, of Southwater Street, Southwater, near Horsham, said: "Winning my heat was so unexplainable.

"I just felt on top of the world, the adrenaline was pumping it was amazing.

"There are three qualifying heats. I won the third qualifying heat and then came second in the final.

"I had a bike when I was four but I never really used to ride it. Supercross is a progression from motocross.

"It is a lot more technical. There are a lot of jumps to go over, some are quite high and sometimes you have to jump two or three in a row."

Jack, who is hoping to go on and become a professional rider, described how hard he trained to get fit for Supercross.

He thanked his parents for supporting him, Sussex Sports Motorcycles in Burgess Hill for sponsoring him and especially his brother Ryan, 12, who gave up motocross so the family could afford to let Jack pursue his dream of becoming a champion at Supercross.

Jack, who goes to Tandridge School in Horsham, said: "I train at the gym although I don't train on the bike but in summer I do try to get out one night a week.

"When I come home from school I do half and hour on the push bike and stretching every night. It's the adrenaline really. It is unexplainable. It is like everyone is watching you, cheering you on, giving you so much support and your mates are there as well cheering you on. You get totally different friends than at school."

His dad, Dave, 37, who gave up motocross about five years ago, is understandably proud of his teenage son.

He said: "It is very exciting to watch in the arena when all of a sudden the riders are head height with you as they go over the jumps.

"He is very dedicated and although I take him training he is the one who actually does it.

"Really it is every night just to maintain the fitness. I am very proud of him doing it.

"The jumps are so steep and some people are daunted by them but he isn't.

"His mum Belinda said watching him was better than giving birth to him."