LONDON (Agencies) - Amir Khan insists he will still be Britains first pound-for-pound No 1. The former double world champion has made a defiant response to his shock defeat to Lamont Peterson last weekend. He has vowed to reclaim his WBA and IBF light-welterweight titles and is already in negotiations with the American over a rematch to be held as early as March. And Khan says he doesnt want the next fight to be in the UK, despite his fury over losing his titles in Petersons home town of Washington. The 25-year-old is adamant he doesnt want to give his rival any excuses when he avenges the defeat. Khan said: I dont think the rematch will be in the UK. It can be anywhere but DC. Maybe Las Vegas. He said he would love a rematch, but he will never come to the UK. Id rather not have it in the UK because if I do beat him then he cant say the same happened to him. We want a neutral venue with neutral judges and referee. Khan was livid after referee Joe Cooper deducted him two points in his split-decision defeat to Peterson. Without those two crucial decisions he would have won the fight unanimously, setting him up for a pound-for-pound super fight with Floyd Mayweather Jr. The Bolton star is convinced he will still get in the ring with Mayweather and dismissed suggestions he allowed himself to be distracted by the prospect of a clash with Money. We focused on Lamont Peterson 100 percent, he said. We knew it would be a tough fight and we didnt look past that fight. But everyone has ambitions. They want to fight the best. I want to fight Floyd Mayweather. Thats still an ambition of mine to face the best fighter in the world, just like Ricky Hatton did. That would probably be the pinnacle of my career. Hes the guy to beat. But whoever they put in front of me, thats the guy I focus on. Securing a rematch with Peterson has delayed Khans plans to step up to welterweight. But he is still convinced he can become a multi-weight world champion and will eventually succeed Manny Pacquiao as pound-for-pound king. Im only 25 so defeat is not the end of the world, he said. Normally fighters in my position are about 27. Ive not hit my peak yet. These are the fights that will take me where I want to be. Its a fight that will make me a better fighter. It was tough and I enjoyed every minute of it. Id love to get back in there. I did make mistakes, but I wont make them again. Im still learning. Khans camp has issued a complaint over Coopers performance. They were also angered after being told hed won the fight during the five-minute wait for the verdict to be announced at the Washington Convention Centre. Questions have been asked as to why he agreed to fight in Petersons home town when he was the defending champion. But manager Asif Vali insists Brits will have to continue to make concessions to secure the best fights. British boxers have got to go away to fight and challenge, even as champions, he said. Hes the best and he has to give a lot away. Hes not avoiding challenges. He wants to go into uncomfortable situations. Khan added: We offered the opportunity to a lot of fighters. I said Id put both titles on the line. We offered it to Erik Morales and Timothy Bradley. I wanted a fight in December thats why we went into Lamont Petersons backyard.