Boris Johnson will host a Downing Street press conference on Wednesday afternoon, No.10 has announced.
The prime minister will also take part in a “national clap” at 6pm to honour the life of Captain Tom Moore.
“We all now have the opportunity to show our appreciation for him and all that he stood for and believed in,” Johnson said.
The 100-year-old’s death has prompted reaction from around the world, after he raised more than £32 million for the NHS during the first coronavirus lockdown.
MPs also held a minutes silence in memory of Moore, before prime minister’s questions.
Speaking in the Commons Keir Starmer, the Labour leader, said Moore “perhaps more anyone embodied the spirt of Britain”.
Theresa May, the former prime minister, said Moore had been “a beacon of light at time of darkness and a true gentleman”.
It comes as a study showed a single dose of the Oxford vaccine may reduce transmission of coronavirus by two thirds.
The finding provided a major boost to the government’s recommendation that the second jab should be delayed for up to 12 weeks.
Researchers said that the first dose of the Oxford/AstraZeneca jab offers protection of 76% up to three months and may reduce transmission by 67% — with efficacy rising to 82.4% after the second dose 12 weeks later.
The data from the study by the University of Oxford, which has not yet been peer reviewed, supports the four- to 12-week prime-boost dosing interval that many global regulators, including the UK’s, have recommended.
Before these results, little was known about how effective the Covid-19 vaccines were at preventing transmission of the disease.
The findings indicate that those who have been vaccinated are not only protected from the disease, but that they are not likely to pass on the virus to anyone.