The World Anti-Doping Agency has released a report detailing "potential wrongdoing" regarding the drug testing of British cyclists dating back to 2011.

The WADA investigation labelled "Operation Echo" began in March after allegations against both British Cycling and UK Anti-Doping arose before the London 2012 Olympics, and "individuals" have since been implicated in the findings.

WADA director Gunter Younger said of the report: "Operation Echo confirmed potential wrongdoing by individuals in both British Cycling and Ukad at that time. Following this investigation, a copy of our report was provided to the WADA Compliance, Rules and Standards Department for its consideration.

"In addition, the summary report was provided to the Union Cycliste Internationale – the governing body under which British Cycling operates – and to the United Kingdom Department of Digital, Culture, Media, and Sport for their attention.

"'Operation Echo' makes no corrective recommendations as those involved in the events of 2011 are no longer employed by UKAD, and UKAD has already put safeguards in place to avoid a repeat occurrence. It is important to acknowledge that WADA I&I received the full co-operation and transparency of British Cycling and UKAD throughout our investigation."

The findings were welcomed by WADA, with a spokesperson saying in a statement: "Wada's report focuses on matters from 2011 and on the involvement of one individual, who is no longer employed by Ukad. We acknowledge that these matters would not take place today.

"The report from Wada makes clear that the results of the testing carried out by British Cycling were all negative and notes the negative results from Ukad's own extensive testing of British Cycling athletes at that time.

"We agree that anti-doping organisations should be held to the highest standards and we will fully consider the contents report. However, Wada has not made any recommendations for action by Ukad."

The Operation Echo report comes after ex-British Cycling and Team Sky chief doctor Richard Freeman admitted 18 of 22 charges related to ordering testosterone and misconduct back in March. body check tags ::