Moynihan says the BOA will fight any legal challenge by Chambers
British Olympic Association (BOA) chairman Lord Moynihan says he will do everything in his power to make sure Dwain Chambers does not run in Beijing.
The BOA banned the British sprinter from the Olympics for life after he tested positive for THG in 2003.
The 29-year-old met his legal team on Thursday to consider challenging the ban in the High Court.
But Moynihan said: "There will be no room for cheats in the British team as long as I am involved with the BOA."
Earlier this month, former World Anti-Doping Agency (Wada) boss Dick Pound told BBC Sport that he thought the BOA by-law would be vulnerable to a legal challenge.
The BOA is the only national Olympic association in the world to have a by-law banning athletes convicted of a serious doping offence from the Games.
There have been 26 successful appeals against the lifetime ban over the last 16 years, but nobody has challenged the actual legality of the rule in the courts.
It had been suggested that Chambers might meet with the BOA to agree a compromise, but Moynihan is adamant that could never happen.
"There are absolutely no grounds whatsoever for compromise," he said.
"I will robustly and vigorously defend our by-laws in the interest of all the athletes who seek to represent us both in this generation and future generations - and I'm not going to trade that in for any financial interest.
"We will pay whatever is necessary to have top lawyers represent us and put the strongest case in support of that ban.
If anyone is implying there is a way I can sit down with him and ignore the by-law then forget it. Completely
BOA chairman Lord Moynihan
"What matters is the principle - we will send a clean team to Beijing and there will be no room for doping cheats."
Chambers served a two-year ban from athletics, but - after an unsuccessful stint in American Football - he claimed the silver medal in the 60m final at the World Indoor Championships last week.
He has hinted he may quit athletics altogether if his way forward in the sport is blocked, but met lawyer Nick Collins on Thursday to consider the way ahead.
"It was a very positive meeting and Dwain has gone away to think things over before making a final decision," said Collins.
"He's still very much on a high after winning his silver medal but he knows he must think about the cost of litigation if he challenges the BOA.
"Now we must await his decision on the way ahead."
Moynihan is unrepentant in his opposition to Chambers running in Beijing.
He said: "Mr Chambers has been clear that he was aware of the implications and now has the opportunity to make a challenge.
"But if anyone is implying there is a way I can sit down with him, somehow select him and ignore the by-law then forget it. Completely."