Russian sports minister Vitaly Mutko has said Britain's anti-doping system is "even worse" than Russia's.

A World Anti-Doping Agency commission report accused Russia of "state-sponsored" doping and of contributing to the "sabotaging" of London 2012.

Mutko said: "We're hearing that medals won by our athletes in London must be taken away. But it's the British system of doping control that operated there."

The Department for Culture, Media and Sport said the system was "robust".

A spokesperson added: "It is highly valued by Britain's sports governing bodies and our clean athletes."

Mutko told Russian news agency Interfax the British system had "zero value".

Referring to the 2012 Olympics, he added: "It was Britain's anti-doping organisation under the leadership of the International Olympic Committee.

"Each medal winner was tested for doping and received their medal only after having tested negative."

The Wada independent commission chairman Dick Pound said the All-Russia Athletics Federation (Araf) should be banned from international competition when he made his address on Monday to accompany the publication of the report.

Araf has been told to respond by Friday, when the IAAF council will decide whether to suspend Russia from international competition. It could also strip the country of future events, including the World Junior Championships due to be held in Kazan in July 2016.

Mikhail Butov, the general-secretary of the country's athletics federation, said on Wednesday that Russian athletics knows it has a "problem with doping", but an Olympic ban would punish its clean athletes.

He told the BBC the claims were "not new for everybody", but Butov - one of 27 members who will vote - said work was under way to "change the mentality of coaches in the regions", adding that "isolation of any federation is not a good way".

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