The singer made a public apology earlier this week after it emerged that she threw a private 30th birthday party at a restaurant in London’s Notting Hill during lockdown.
Pictures in The Sun showed a number of celebrity guests arriving at Casa Cruz restaurant, including Cara and Poppy Delevingne, and Towie star Vas Morgan.
A Met Police spokesperson said: “Police were called at 9.10pm on Saturday (28 November) to reports of a potential breach of Covid regulations in W11.”
In an Instagram Story, Ora said she was “embarrassed" and “deeply sorry” for breaking the rules.
ITV confirmed to The Independent that Ora will not be appearing on this Saturday’s show (5 December).
The singer has been replaced by comedian Joel Dommett on the line-up, which also includes Michael Palin, Kylie Minogue, Davina McCall and Mo Gilligan.
The Independent understands that Ora hopes to appear on the show before Christmas but it was mutually agreed that her appearance would be postponed.
The Jonathan Ross Show airs at 9.30pm on Saturday 5 December.