UKAD chief executive Nicole Sapstead said: “I can confirm that UKAD does not intend to issue any anti-doping charges as a result of the investigation into the package.

“As with all UKAD investigations, our work has been thorough and extensive, and I can reassure the public that we treat every credible allegation with the utmost seriousness.

“Our investigation was hampered by a lack of accurate medical records being available at British Cycling. This is a serious concern.

“As part of their conditions to receive public funding from UK Sport and other Home Country Sports Councils, all sports governing bodies must comply with the UK National Anti-Doping Policy. In this case the matter was further complicated by the cross over between personnel at British Cycling and Team Sky.

“We have written to British Cycling and a copy of this letter has also been sent to UK Sport and Sport England. We have also separately written to Team Sky.

“Finally, we have referred some information to the GMC, and will cooperate with the GMC as necessary in respect of that information.”

Dr. Freeman resigned from his British Cycling post last month, having been unavailable for further interview as a result of ill-health.

It was found during the investigation, his poor record-keeping and failure to use Team Sky’s Dropbox system meant no record of the medication administered to Wiggins could be found, particularly after Dr. Freeman’s laptop was stolen on holiday.

In summarising the investigation, UKAD’s statement concluded: “Put simply, due to the lack of contemporaneous evidence, UKAD has been unable to definitively confirm the contents of the package. The significant likelihood is that it is now impossible to do so.”

After the decision not to bring charges was confirmed, Team Sky issued a statement reaffirming their anti-doping stance.

“We are pleased that UK Anti-Doping have concluded their investigation and that they will not be taking any further action,” it read.

“We have always maintained that there was no wrongdoing and we have co-operated fully with UK Anti-Doping over the last year.

“Since our inception as a new pro cycling team in 2010 we have continually strengthened our systems and processes so they best support our strong commitment to anti-doping.”