Meghan and Harry were last in the UK together in January before the terms of their Megxit were agreed.
As well as Thursday’s appearance at the Endeavour Fund Awards at Mansion House, the couple will be at Saturday’s Mountbatten Festival of Music at the Royal Albert Hall.
The Duchess will also face the Queen, Charles and Camilla and William and Kate for the first time since the split at Monday’s Commonwealth Day service at Westminster Abbey.
It will be the Sussexes’ final event as senior royals.
A spokesman for the couple refused to comment on their private schedule.
Speaking to MPs on the health and social care committee, Prof Whitty said the country was now "mainly" in the delay phase of the government's four-part plan to tackle the virus, but was still following aspects of the first phase.
Downing Street said it would formally announce when it switches from the contain to delay stage of taking on the virus - and that this has not yet happened.
The government is still deciding what measures will be taken in the delay phase, but has previously said they could include banning big events, closing schools, encouraging people to work from home and dissuading the use of public transport.
But Prime Minister Boris Johnson said the government's scientific advisory group for emergencies (Sage) had told him that closing schools and stopping big gatherings "don't work as well perhaps as people think in stopping the spread".
He told ITV's This Morning programme: "One of the theories is perhaps you could take it on the chin, take it all in one go and allow the disease to move through the population without really taking as many draconian measures. I think we need to strike a balance."
Mr Johnson said it would be "business as usual" for the "overwhelming majority" of people in the UK.
Prof Whitty also said there was "no need" for members of the public to stockpile food or medicine, adding that the outbreak would be a "marathon not a sprint".
"There is nothing in the current environment that would rationally lead someone to want to go out and stock up on stuff," he added.
The government has said it has a stockpile of important medicines and protective equipment, to counter any impact to global supply chains.
What do I need to know about the coronavirus?
Prof Whitty said consequences of the delay phase included:
Pushing the peak of cases "further away from the winter pressures on the NHS" so that there was "more capacity to respond"
Buying time to allow the UK to improve its response or develop counter measures such as drugs, vaccines and diagnostics
There may be a seasonal element of the virus - so if the peak was delayed to spring or summer, the "natural rate" of transmission could be lower
Prof Whitty said the early stages of the delay phase were similar to the contain phase, and involved identifying cases of the virus, isolating patients, and tracing anyone who had been in contact with them.
"As time moves by, we then may start to move into the more socially determined actions... the kind of measures we can do to delay things which involve changes to society," he said.
He said it was likely that later in the response, elderly people and those with pre-existing health conditions would be advised to "have some degree of isolation from more public environments" and may be told, for example, to "avoid crowded areas".
The UK's early response to the virus, which causes Covid-19, was based on the spread being controlled in China, with some minor outbreaks in other countries, Prof Whitty said.
But he added: "The chances of that happening are now very slim. Slim to zero."
Prof Whitty said in the worst case scenario of an epidemic in the UK, critical care beds would be "under pressure at quite an early stage".
The competition watchdog has warned retailers and traders they could be prosecuted for trying to "exploit" the coronavirus outbreak by selling protective products at inflated prices
Elsewhere, the prime minister's official spokesman told a briefing in Westminster that the spread of the virus would cause "no change" to the end date of the Brexit transition period on 31 December.
About 90,000 people have been infected globally since the outbreak of coronavirus in Hubei province, China, in December, with cases in more than 50 countries and more than 3,000 deaths.
How have you been affected by the virus? If you have had the virus or know someone who has and who is willing to share their experiences, please get in touch with us confidentially by email haveyoursay@bbc.co.uk.
Please include a contact number if you are willing to speak to a BBC journalist. You can also contact us in the following ways:
Speaking to MPs on the health and social care committee, Prof Whitty said the country was now "mainly" in the delay phase of the government's four-part plan to tackle the virus, but was still following aspects of the first phase.
Downing Street said it would formally announce when it switches from the contain to delay stage of taking on the virus - and that this has not yet happened.
The government is still deciding what measures will be taken in the delay phase, but has previously said they could include banning big events, closing schools, encouraging people to work from home and dissuading the use of public transport.
But Prime Minister Boris Johnson said the government's scientific advisory group for emergencies (Sage) had told him that closing schools and stopping big gatherings "don't work as well perhaps as people think in stopping the spread".
He told ITV's This Morning programme: "One of the theories is perhaps you could take it on the chin, take it all in one go and allow the disease to move through the population without really taking as many draconian measures. I think we need to strike a balance."
Mr Johnson said it would be "business as usual" for the "overwhelming majority" of people in the UK.
Prof Whitty also said there was "no need" for members of the public to stockpile food or medicine, adding that the outbreak would be a "marathon not a sprint".
"There is nothing in the current environment that would rationally lead someone to want to go out and stock up on stuff," he added.
The government has said it has a stockpile of important medicines and protective equipment, to counter any impact to global supply chains.
What do I need to know about the coronavirus?
Prof Whitty said consequences of the delay phase included:
Pushing the peak of cases "further away from the winter pressures on the NHS" so that there was "more capacity to respond"
Buying time to allow the UK to improve its response or develop counter measures such as drugs, vaccines and diagnostics
There may be a seasonal element of the virus - so if the peak was delayed to spring or summer, the "natural rate" of transmission could be lower
Prof Whitty said the early stages of the delay phase were similar to the contain phase, and involved identifying cases of the virus, isolating patients, and tracing anyone who had been in contact with them.
"As time moves by, we then may start to move into the more socially determined actions... the kind of measures we can do to delay things which involve changes to society," he said.
He said it was likely that later in the response, elderly people and those with pre-existing health conditions would be advised to "have some degree of isolation from more public environments" and may be told, for example, to "avoid crowded areas".
The UK's early response to the virus, which causes Covid-19, was based on the spread being controlled in China, with some minor outbreaks in other countries, Prof Whitty said.
But he added: "The chances of that happening are now very slim. Slim to zero."
Prof Whitty said in the worst case scenario of an epidemic in the UK, critical care beds would be "under pressure at quite an early stage".
Elsewhere, the prime minister's official spokesman told a briefing in Westminster that the spread of the virus would cause "no change" to the end date of the Brexit transition period on 31 December.
About 90,000 people have been infected globally since the outbreak of coronavirus in Hubei province, China, in December, with cases in more than 50 countries and more than 3,000 deaths.
How have you been affected by the virus? If you have had the virus or know someone who has and who is willing to share their experiences, please get in touch with us confidentially by email haveyoursay@bbc.co.uk.
Please include a contact number if you are willing to speak to a BBC journalist. You can also contact us in the following ways:
Speaking to MPs on the health and social care committee, Prof Whitty said the country was now "mainly" in the delay phase of the government's four-part plan to tackle the virus, but was still following aspects of the first phase.
It is still being decided what measures will be taken in the delay phase - but the government has said they could include banning big events, closing schools, encouraging people to work from home and dissuading the use of public transport.
What do I need to know about the coronavirus?
Prof Whitty said consequences of the delay phase included:
Pushing the peak of cases "further away from the winter pressures on the NHS" so that there was "more capacity to respond"
Buying time to allow the UK to improve its response or develop counter measures such as drugs, vaccines and diagnostics
There may be a seasonal element of the virus - so if the peak was delayed to spring or summer, the "natural rate" of transmission could be lower
Prof Whitty said the early stages of the delay phase were similar to the contain phase, and involved identifying cases of the virus, isolating patients, and tracing anyone who had been in contact with them.
"As time moves by, we then may start to move into the more socially determined actions... the kind of measures we can do to delay things which involve changes to society," he said.
He said it was likely that later in the response, elderly people and those with pre-existing health conditions would be advised to "have some degree of isolation from more public environments" and may be told, for example, to "avoid crowded areas".
The UK's early response to the virus, which causes Covid-19, was based on the spread being controlled in China, with some minor outbreaks in other countries, Prof Whitty said.
But he added: "The chances of that happening are now very slim. Slim to zero."
'Marathon not a sprint'
Prof Whitty said there was "no need" for members of the public to stockpile food or medicine.
"This is going to be... a marathon not a sprint," he said.
The government has said it has a stockpile of important medicines and protective equipment, to counter any impact to global supply chains.
"There is nothing in the current environment that would rationally lead someone to want to go out and stock up on stuff," Prof Whitty added.
Prof Whitty added that access to critical care beds would be "under pressure at quite an early stage" in the worst case scenario of an epidemic in the UK.
Prime Minister Boris Johnson said measures such as closing schools and banning big events "don't work as well perhaps as people think".
He told ITV's This Morning programme another way of responding to the virus would be to "take it on the chin" and allow it to "move through the population without really taking as many draconian measures".
"I think we need to strike a balance," he added.
Mr Johnson said it would be "business as usual" for the "overwhelming majority" of people in the UK.
The prime minister's official spokesman told a briefing in Westminster that the spread of the virus would cause "no change" to the end date of the Brexit transition period on 31 December.
About 90,000 people have been infected globally since the outbreak of coronavirus in Hubei province, China, in December, with cases in more than 50 countries and more than 3,000 deaths.
How have you been affected by the virus? If you have had the virus or know someone who has and who is willing to share their experiences, please get in touch with us confidentiallyby email haveyoursay@bbc.co.uk.
Please include a contact number if you are willing to speak to a BBC journalist. You can also contact us in the following ways:
The UK has seen its biggest day-on-day increase in coronavirus cases, bringing the total number to 87.
Almost all of the 36 new patients had recently travelled to affected countries or been infected by others who had done so, the UK's chief medical officer Prof Chris Whitty said.
But it is not clear how three new patients in England caught the virus.
Health Secretary Matt Hancock is chairing a meeting of the emergency Cobra committee in London.
Two of the latest patients are Scottish - one who lives in the Grampian area and the other in Ayrshire. One had recently travelled to northern Italy while the other had contact with a known positive case.
Two of the new patients are from Carlisle and both had recently returned from a trip to northern Italy. One is a member of healthcare staff at the Cumberland Infirmary.
Another patient tested positive after being admitted to Wythenshawe Hospital in Manchester. The hospital remains open.
Lancashire County Council said two people in South Ribble who had recently travelled to Italy were isolating themselves at home after testing positive.
Students at Goldsmiths in south London have been told a visitor to one of the university's halls of residences had tested positive for coronavirus.
In an email, the university said the person was "being looked after" and that the student they visited was "self-isolating as a precautionary measure".
Meanwhile Buckingham University and the University of London have put back their graduation ceremonies to minimise the spread of the disease.
In "the worst case scenario", up to 80% of the UK population could be infected with coronavirus, which causes the disease Covid-19, Prof Whitty said.
But he said a move to lock down entire towns and cities across the UK would be "very unlikely".
Italy is considering closing schools and universities across the country until mid-March - a decision will be taken "in the next few hours", its education minister says. Italy is the worst-hit European country with some 2,260 cases and 79 deaths so far - including more than 20 in the past 24 hours
Guests who left a quarantined hospital in Tenerife have been told to self-isolate for a further week after a British woman at the hotel tested positive on 2 March
CCTV images have been released of four men wanted over an alleged racist attack on London's Oxford Street, reportedly motivated by virus fears
A major public health campaign urging people to wash their hands regularly for at least 20 seconds has also been launched.
Health Secretary Matt Hancock said washing hands regularly was the "single most important thing that an individual can do".
Public Health England says to use a hand sanitiser with at least 60% alcohol if soap and water are not available, advising that hand washing is particularly important after using public transport.
Mr Johnson told the House of Commons that people who self-isolate should not be "penalised for doing the right thing".
What have we learnt from these new cases?
It's the biggest daily rise we have had. But this is not unexpected - health officials have been warning we should be braced for an increase.
This could last for two or three months until a peak is reached.
Of the 34 new cases, three are worrying from the perspective that the government has been unable to establish how they were infected. They have no links to people who have been abroad to places where there are significant outbreaks.
That brings the total number of cases like this to five - and could be a sign that the virus is circulating in the community.
Some of the other new cases are not people who had been abroad, but were infected in this country by people who had been.
That in itself is a sign there are clusters developing that the health authorities will be working hard to contain.
No details are being released about where the new cases are or just how big these clusters are, leaving some key questions hanging.
The sick pay announcement means those receiving statutory sick pay would get an extra £40 a week, paid for by their employers.
About 90,000 people have been infected globally since the outbreak of coronavirus in Hubei province, China, in December, with cases in more than 50 countries and more than 3,000 deaths.
The UK has seen its biggest day-on-day increase in coronavirus cases, bringing the total number to 85.
Some 29 of the 34 new patients had recently travelled to affected countries or picked it up from others who had done so, the UK's chief medical officer Prof Chris Whitty said.
But it is not clear how three new patients in England were infected.
Health Secretary Matt Hancock will chair a Cobra meeting at 17:00 GMT, Downing Street said.
Italy is considering closing schools and universities across the country until mid-March - a decision will be taken "in the next few hours", its education minister says. Italy is the worst-hit European country with some 2,260 cases and 79 deaths so far - including more than 20 in the past 24 hours
Guests who left a quarantined hospital in Tenerife have been told to self-isolate for a further week after a British woman at the hotel tested positive on 2 March
CCTV images have been released of four men wanted over an alleged racist attack on London's Oxford Street, reportedly motivated by virus fears
Mr Johnson told the House of Commons that people who self-isolate should not be "penalised for doing the right thing".
What have we learnt from these new cases?
It's the biggest daily rise we have had. But this is not unexpected - health officials have been warning we should be braced for an increase.
This could last for two or three months until a peak is reached.
Of the 34 new cases, three are worrying from the perspective that the government has been unable to establish how they were infected. They have no links to people who have been abroad to places where there are significant outbreaks.
That brings the total number of cases like this to five - and could be a sign that the virus is circulating in the community.
Some of the other new cases are not people who had been abroad, but were infected in this country by people who had been.
That in itself is a sign there are clusters developing that the health authorities will be working hard to contain.
No details are being released about where the new cases are or just how big these clusters are, leaving some key questions hanging.
The sick pay announcement means those receiving statutory sick pay would get an extra £40 a week, paid for by their employers.
About 90,000 people have been infected globally since the outbreak of coronavirus in Hubei province, China, in December, with cases in more than 50 countries and more than 3,000 deaths.
