UK Athletics chairman Ed Warner has urged world governing body the IAAF to act "swiftly and openly" with the allegations of systematic doping and corruption in Russian sport.
On Wednesday evening a Germany television documentary presented what it claimed was evidence of widespread drugs use.
The documentary also contended that the corruption extends beyond Russia and implicated the IAAF in covering up the abuse - "grave allegations" the independent ethics commission of international athletics' governing body is already investigating.
We don't need this in a year's time, we need this in a matter of weeks' time," Warner told the Guardian. We don't want to go into the 2015 athletics season with suspicion hanging over Russian athletes.
We can't be going into a European indoor championships in Prague in March with people looking at what they are watching and wondering if they can believe it.
The allegations that have been aired are clearly extremely serious and it's vital the IAAF doesn't pay lip service to any investigation and is seen to thoroughly scrutinise what has or has not gone on here swiftly and openly.
British sprinter James Ellington has described winning bronze in the 4x100m relay before being disqualified as the "best and worst day" of his career.
Best and worst day of my athletics career so far all within an hour,we deserved better.
Thanks everyone for the support,we will be back and even better
British sprinter Adam Gelili has tweeted about his team being disqualified from the 4x100m relay at the World Athletic Championships in Moscow today:
Thank you all for the messages of encouragement. To be so close to receieving a medal and have it taken away is heartbreaking
As a team we will pick ourselves up and carry on until we get it right. Onwards and upwards!
BIg up to the GB 4x100m women on receiving the news for bronze. Extremely proud! Just a shame they don't get their moment on the podium
Great Britain has lost its bronze medal to Canada after being disqualified over the second changeover in the 4x100m relay.
Dwain Chambers crossed the line third but the change between Harry Aikines-Aryeetey and James Ellington took place outside the designated box.
Canada was then awarded third place on appeal.
"It's heart-breaking," Aikines-Aryeetey said. "We found out when we were walking to the medal presentation."
Team GB loses its bronze medal in the 4x100m men's final for an illegal changeover.
Usain Bolt and the Jamaica relay team won the 4x100m gold in Moscow, with the 100m champion finishing ahead of US rival Justin Gatlin in the final leg.
Great Britain wins bronze in the men's 4x100m final in the World Athletics Championships in Moscow, in a time of 37.80 seconds.
Usain Bolt and the Jamaica team have won gold in the men's 4x100m final in the World Athletics Championships in Moscow, in a time of 37.36 seconds.
Prime Minister David Cameron would "warmly welcome" a knighthood for Mo Farah after the athlete became the first Briton to win both long-distance titles at the Olympic and World Championships, The Sunday Times has reported.
The newspaper quoted Mr Cameron as saying: "The Olympic and world double-double is one of the great sporting achievements. If the honours committee were to recommend Mo for a knighthood, I would warmly welcome it.”
Farah completed the set with victory in the 5,000m at the Worlds in Moscow on Friday, after which he was widely proclaimed as Britain's finest ever athlete.
British and Northern Irish athletes have claimed five medals in the IAAF World Athletics Championships in Moscow so far, placing them seventh overall in the medal table.
- Mo Farah: Gold in the men's 10,000m
- Christine Ohuruogu: Gold in the women's 400m
- Mo Farah: Gold in the men's 5,000m
- Eilidh Child, Shana Cox, Margaret Adeoye and Christine Ohuruogu: Bronze in the women's 4x400m relay
- Tiffany Porter: Bronze in the women's 100m hurdles