Small social gatherings will be permitted from Monday, after Boris Johnson announced an easing of lockdown restrictions - but also warned people they must not let their guard down.
He told the Committee, "It is very hard to bring forward hospitality measures in a way that involves social distancing".
He said that non-essential retail could be reopened from June 15, among other measures and said that from Monday up to six people could meet outside in parks and private gardens provided social distancing rules were maintained.
The Prime Minister said the further ease of restrictions was possible because the government's five tests, including a fall in deaths, were being met.
The latest "limited and cautious" lockdown lift emphasises the government's desire to allow for more social contact between households, without risking the infection rate rising.
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Republican officials say such a large event requires months of preparation, making it imperative they receive assurances. On the Democratic side, the party pushed its convention back from July to August because of the global health crisis.
It's important to highlight that while you may be visiting another household under the relaxed rules, you shouldn't be spending time inside the other person's home "other than to access the garden or use the toilet", and clean up after yourself, as Whitty said.
Operators including chef Raymond Blanc, Wagamama chief Andy Hornby and Hospitality Union's Jonathan Downey have said reducing distancing requirements to one metre in line with the World Health Organization recommendations would see more businesses survive the Covid-19 crisis and save "thousands of jobs".
- Scottish First Minister Nicola Sturgeon announced that people in Scotland will be able to meet one other household at a time outdoors from Friday as lockdown measures ease.
"These changes mean friends and family can start to meet their loved ones", said Mr Johnson.
He continued: "But to control the virus everyone needs to stay alert and strictly stay 2 metres apart from those you do not live with".
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Mais il me semble que pendant deux mois et demi, les compétitions ont été interrompues pour d'excellentes raisons. La Premier League redémarrera donc le a7 juin.
He added: "We don't want people to stay overnight, we don't want people to go to other households and stay there, I'm just afraid we're not at that stage".
Phase two will begin from Monday June 1 and will see friends and family able to meet in groups of six, the reopening of schools for some students in England, as well as some non essential retailers.
Seventy-one per cent of people in a YouGov survey thought the PM's chief advisor had ignored government regulations when he drove more than 200 miles to his parents' estate in Durham at the height of the lockdown.
Sunbathers enjoy the hot weather while trying to observe social distancing on the beach in Boscombe, southern England, on a public holiday Monday May 25, 2020.
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They said strategies are needed to assess and monitor all passengers to prevent community transmission after disembarkation. The first case of fever was reported on day 8, prompting the immediate adoption of infection control measures.