The convicted drugs cheat said that being prevented by the BOA from working with Malcolm, who he has coached for several years, in the final stages of his preparation for the Olympics prevented him from doing better.

The Welshman finished fifth in a final won by Jamaica's Usain Bolt.

Christie is banned from any involvement with the British Olympic team, including being granted accreditation for pre-Games training camps, because he tested positive for banned anabolic steroids in 1999.

The two-year ban cast a massive shadow over the rest of his career, including his 1992 Olympic and 1993 world 100m titles.

Christie told BBC Wales in an interview broadcast last night: "UK Athletics and the BOA didn't give Christian the chance to prepare for the Olympics as best as he possibly could.

"I wasn't allowed to go to the warm-up camp [in Macau] so he had to go out there and do a lot of stuff on his own.

"You need those kind of things where just before you go into championships, there's things you've got to tweak to make him ready.

"He wasn't given the same chance as a lot of other athletes who had their own personal coaches and everything else."

A spokesman for the BOA told BBC Wales: "Linford is under our by-law ineligible for accreditation for Team GB.

"As well as the Olympic Games, that includes our preparation camp."

Earlier this year, Christie was also denied the opportunity to take part in the Beijing Olympic Torch Relay when it passed through London because of his drugs-tainted past.