Dwain Chambers said that he wants to be at the forefront of the fight by UK Athletics (UKA) to clean up the sport as he prepares for his controversial comeback at the World Indoor Championships in Valencia.

The sprinter, who completed a two-year doping ban for taking tetrahydro-gestrinone (THG) in 2005, said that he would be happy to meet Dame Tanni Grey-Thompson, who has been appointed as the head of UKA’s new anti-doping review. “I’m not here to be bad or make the sport look bad,” Chambers said. “Of course I will do anything to help resolve the situation. I’m going to do what I can to help.”

Grey-Thompson told The Times this week that she wanted to meet Chambers because she wanted to know what drove elite athletes to take drugs.

Chambers’s immediate concern is running for Great Britain in the 60 metres tomorrow, but he said that he had slotted back into the team without a problem, even though the selection panel had been unanimous in its wish not to pick him. “They have been really good about everything and helpful once they knew I would be back in the squad,” Chambers said. “Now I just want to get out there and prove to everyone that I am doing my very best to achieve something for my country.”

With one of his rivals, Michael Rodgers, of the United States, calling Chambers “a dirty athlete”, the 29-year-old knows that it could be an awkward weekend, but he believes that he could win a gold medal after easing to victory in the Great Britain trials in Sheffield last month.

“That’s what I’ve come here to do for my country,” Chambers said. “As always, I intend to do my talking with my legs. OK, I haven’t raced since the trials, but my training has gone very well. It’s unfortunate everyone else has been dragged into it. I’ve just got to make the most of it and go out and run and make athletics look good.”

Dave Collins, the UKA performance director who has said he will not celebrate if Chambers wins gold, welcomed him at Valencia airport yesterday and said: “Now we are at the event it is our job to give each competitor the best support we can and avoid any distractions.”

Chambers has also found an unlikely ally as he considers challenging his British Olympic Association (BOA) life ban. Dick Pound, the former president of the World AntiDoping Agency (Wada), said that he believed the drugs cheat would be successful if he took the BOA to court. “I think the BOA would be on pretty shaky ground,” Pound said. “The BOA is a signatory to Wada’s code. Those are the rules that govern doping infractions and the sanction for a first offence is a two-year suspension. Chambers has served his ban and I think, depending on your view of criminal justice, if you serve the penalty that was deemed appropriate, you are entitled to be reintegrated into society.”

However, José MarÍa Odriozola, the president of the Spanish Athletics Federation, took a different stance over Chambers’s presence in Valencia. “I’m not happy that Chambers is competing, but we can’t do anything about it because his country has included him in their team,” he said.

Chambers has said that he will make his decision on whether to contest the BOA ban, either in the High Court or the Court of Arbitration for Sport, after the World Indoor Championships.