Ben Shepherd stood in for Piers Morgan today on Good Morning Britain as the TV host temporarily steps back from the programme after developing a "mild" coronavirus symptom.
Morgan has been tested for the virus and will not return to the programme until he receives his results, which are due today.
Shephard introduced Monday's show, saying: "It's just gone six o'clock. Welcome to the programme. As you can see, I am not Piers."
Co-host Susanna Reid added: "No, it's therapeutic Monday," before showing viewers a tweet from Morgan.
It read: "On medical advice, and out of an abundance of caution for a mild symptom that arose in the past 48 hours, I've had a test for Covid-19 and so won't be working on Good Morning Britain until I get the result back, which should be tomorrow."
Reid added: "That was tweeted yesterday so the results should be back today. We send our very best wishes to you, Piers, and we will be on our best behaviour while you are not here."
Last month, Morgan was cleared of breaching TV watchdog Ofcom's rules after attracting more than 3,000 complaints about his "combative" interviews with British government ministers amid the outbreak.
UPDATE: On medical advice, and out of an abundance of caution for a mild symptom that arose in past 48hrs, I've had a test for COVID-19 and so won’t be working on @GMB until I get the result back, which should be tomorrow.— Piers Morgan (@piersmorgan) May 3, 2020
The complaints were made over two interviews with care minister Helen Whately.
Morgan defended the first interview, saying it was not as "uncomfortable" as the conditions for the carers on the front line of the coronavirus crisis.