The National Olympic Committee, which is made up of all the summer and winter sports that compete in the Games, are due to hold a conference call to discuss the decision last month by the Court of Arbitration of Sport (CAS) that declared the rule is illegal.

It means that to be compliant with the rules of the World Anti-Doping Agency (WADA), who brought the case to the CAS, and remain eligible to compete in the Olympics it must be dropped.

The BOA decision will come just a few hours before WADA is due to hold an Executive Committee and Foundation Board meeting in Montreal where the matter is set to be top of the agenda.

Once they receive notification that the BOA have dropped its rule, introduced in 1992, they can declare Britain is fully compliant with the WADA Code.

David Howman, the chief executive of WADA, had warned after the decision was announced that CAS had ruled against the BOA that they had to act quickly to amend their rules beacause this was their final Executive Committee's meeting before London 2012. 

The BOA are expected to confirm tomorrow afternoon that they have amended their rules to end the bylaw, which they claim is supported by the majority of British athletes.

But it seems unlikely that BOA chairman Colin Moynihan will resist the opportunity to complain that WADA have unfairly forced Britain to drop its rule and again question whether it is fit to be in charge of anti-doping around the world.

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