The UK could be the first country in the world to carry out Covid "challenge trials" - where healthy volunteers are deliberately infected with coronavirus to test possible vaccines.
It is understood the studies - first reported by the Financial Times - would be conducted in London.The UK government said it was holding discussions about developing a vaccine through such "human challenge studies".
No contracts have yet been signed, the BBC understands.
'Out of the pandemic'
Alastair Fraser-Urquhart, an 18-year old university student, is planning on volunteering for the trial if it is given the green light to go ahead. He helps run the advocacy group, 1Day Sooner.