The England football team doctor is due to give evidence at Parliament over a controversial supplement infusion he supplied to Sir Mo Farah prior to the London Marathon.
It has been revealed that Dr Robin Chakraverty administered an infusion of L-Carnitine, on the instruction of Farah's American coach Alberto Salazar, ahead of the race in 2014.
Chakraverty, who has also worked as the UK Athletics doctor, has been summoned to appear before the Culture, Media and Sport committee as part of its on-going probe into doping.