A former Team Sky doctor at the centre into the probe of a Jiffy Bag containing medicine couriered to the 2011 Criterium du Dauphiné and containing medicine for Sir Bradley Wiggins will miss a planned appearance before a House of Commons Select Committee tomorrow because he is too ill to attend.

Richard Freeman was due to have been grilled by members of the Culture, Media and Sport Select Committee as part of its investigation into doping in sport, but the Guardian reports that he emailed its chair, the MP Damian Collins, to say he was unable to appear due to illness.

UK Anti-doping (UKAD) chief executive Nicole Sapstead and former British Cycling coach Simon Cope, who delivered the package to Freeman at the race in the French Alps, flying from Gatwick to Geneva on the same day, are still due to testify at tomorrow’s oral evidence session, which starts at 2.00pm.

The hearing had originally been scheduled to take place on 22 February but was postponed since UKAD, which is also investigating the mystery package, asked for more time while it concluded its probe into “allegations of wrongdoing.”

According to the Guardian, a spokesperson for the committee has said that Freeman will be given “the option of supplying written evidence and [that it] may call him to appear when he’s well enough.”

Quoted on the Parliament.uk website, Folkestone and Hythe MP Collins said: “There is a considerable public interest in UKAD’s investigation and it is also important to our inquiry into doping in sport to understand what they have been able to determine, and to understand the processes around controlled substances within sport.

“On 1st March there should be no reason not to have a full exposition of the facts on this case,” he added.

In December, Team Sky principal Sir Dave Brailsford told the committee that the package contained the decongestant Fluimucil, which is not a banned substance.

But Collins subsequently made it clear that he was not satisfied with that answer, highlighting that no paper trail appears to exist regarding the package or its contents.

> MP says British Cycling has no paper trail for Wiggins package