A government advisor who broke lockdown rules to meet his married lover will face no further action from the police.
Professor Neil Ferguson accepted he made "an error of judgement" by breaching social distancing rules, Scotland Yard have said.
Nicknamed "Professor Lockdown", Ferguson was key in advising the Prime Minister on putting the lockdown in place.
Scotland Yard said it was "plainly disappointing" but ruled out issuing a fine because he "has taken responsibility" after resigning from his senior position.
Ferguson asked his mistress Antonia Staats to visit him at his home across London even with the strict conditions in place.
The visits happened just weeks after he recovered from the coronavirus.
He had stood down from the Scientific Advisory Group for Emergencies (SAGE).
Health Secretary Matt Hancock said the Imperial College London professor had made the "right decision to resign" but that it was a matter for police to decide whether to take further action.
Scotland Yard said: "We remain committed to our role in supporting adherence to Government guidance and have made it clear that our starting position is explaining the need to follow the regulations with anyone who is in breach in order to keep people safe and protect the NHS.
"It is clear in this case that whilst this behaviour is plainly disappointing, Professor Ferguson has accepted that he made an error of judgment and has taken responsibility for that.
"We therefore do not intend to take any further action."
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