Buster Chapman's impact since taking charge of British speedway has helped convince Scott Nicholls to end his self-imposed GB exile.

The seven-time British champion has not ridden for Great Britain for three years but this morning announced he has made himself available for selection again ahead of this summer's World Cup. The 37-year-old is happy with the way the sport is moving forward again, progress he links to King's Lyn Stars chief Chapman's winter appointment as the chairman of the British Speedway Promoters' Association (BSPA).

Nicholls, who rides for Elite League club Belle Vue Aces, said: 'It's no secret that in the past I was a little disillusioned with the way things were going, and my own personal issues were well documented at the time. It's not that I didn't want to ride for Great Britain, and I guess it was a slightly political stance, but I didn't agree with the way things were being done. I feel that having Buster (Chapman) in charge as BSPA chairman is a very constructive move. He's a very strong character and also a stubborn person – but he will listen, and I truly believe he's got the interests of the sport at heart.

'I'm also pleased to see Colin Pratt back more involved again on the management committee. I've always got on very well with Colin and have a lot of respect for him, and it's those things which have made the decision easier.'

GB have been seeded directly to this year's final on July 30 – which will be held at the Aces' new home in Manchester, the National Speedway Stadium. Boss Alun Rossiter feels the former Ipswich rider's decision will have a positive effect on all of the Lions' hopefuls.

'Rosco', also speaking to SpeedwayGB.co.uk, said: 'Scott knows this isn't a guarantee of selection for the team – we're a long way away from the event, and I'll be monitoring everyone's form closely before making that decision. But it's definitely a boost for us and it will also keep all of the other boys on their toes.'