LONDON — The UK's failure to do more to stop Covid spreading early in the pandemic was one of the worst ever public health failures, BBC reported on Tuesday quoting an inquiry report by lawmakers.

The government approach — backed by its scientists — was to try to manage the situation and in effect achieve herd immunity by infection, it said.

This led to a delay in introducing the first lockdown, costing lives.

But the report by the cross-party group said there had been successes too — in particular the vaccination program.

It described the whole approach - from the research and development through to the rollout of the jabs -- as "one of the most effective initiatives in UK history".

The report predominantly focuses on the response to the pandemic in England. The committee did not look at steps taken individually by Wales, Northern Ireland and Scotland.

The findings are detailed in the long-awaited report - Coronavirus: Lessons learned to date - from the Health and Social Care Committee and the Science and Technology Committee, which contain MPs from all parties.

Across 150 pages, the committees cover a variety of successes and failings over the course of the pandemic, which has claimed more than 150,000 lives to date and is described by the MPs as the "biggest peacetime challenge" for a century.

Tory MPs Jeremy Hunt and Greg Clark, who chair the committees, said the nature of the pandemic meant it was "impossible to get everything right".

"The UK has combined some big achievements with some big mistakes. It is vital to learn from both," they added in a statement to accompany the report.

A government spokesperson said lessons would be learned, which was why there would be a full public inquiry next year.

He added: "We have never shied away from taking quick and decisive action to save lives and protect our NHS, including introducing restrictions and lockdowns.

"Thanks to a collective national effort, we avoided NHS services becoming overwhelmed."

But Labour's shadow health secretary Jonathan Ashworth said the findings were "damning" and showed what "monumental errors" had been made.

And the group representing families who have lost loved-ones during the pandemic - Covid-19 Bereaved Families for Justice -- criticised the committees for not speaking to any relatives of people who died.

When Covid hit, the government's approach was to manage its spread through the population rather than try to stop it -- or herd immunity by infection as the report called it.

The report said this was based on dealing with a flu pandemic, and was done on the advice of its scientific advisers on the Scientific Advisory Group for Emergencies (Sage).

But the idea was not challenged enough by ministers in any part of the UK, indicating a "degree of group-think".

Although to some degree other parts of Europe were guilty of this too, the MPs said.

It meant the country was not as open to approaches being taken elsewhere, such as Asia where countries imposed tight border controls as soon as Covid started circulating.

The result was that too little was done in the early weeks to stop Covid spreading, despite evidence from China and then Italy that it was a virus that was highly infectious, caused severe illness and for which there was no cure.

"The veil of ignorance through which the UK viewed the initial weeks of the pandemic was partly self-inflicted," said the report.

The committees said decisions on lockdowns and social distancing during the early weeks of the pandemic - and the advice that led to them - ranked as "one of the most important public health failures the UK has ever experienced".

The advice from scientists changed on 16 March 2020, but it was only a week later that a lockdown was announced.

"This slow and gradualist approach was not inadvertent, nor did it reflect bureaucratic delay or disagreement between ministers and their advisers," the report says.

"It was a deliberate policy - proposed by official scientific advisers and adopted by the governments of all of the nations of the UK.

"It is now clear that this was the wrong policy, and that it led to a higher initial death toll than would have resulted from a more emphatic early policy. In a pandemic spreading rapidly and exponentially, every week counted."

The MPs also highlighted how ministers in England rejected scientific advice to have a two-week "circuit-breaker" in the fall.

They said it was impossible to know whether that would have prevented the second lockdown in November, although they pointed out it had not in Wales.

Asked who was accountable for mistakes made, Greg Clark, the chair of the science and technology committee, said that in any democracy, politicians were accountable, but stressed everyone, from the prime minister down, was trying to do the best they could.

"We did get some things right and we got some things wrong and it seems essential we don't just let that pass without trying to squeeze out the lessons and confront some difficult truths," he told BBC Breakfast.

The UK was one of the first countries in the world to develop a test for Covid in January 2020, but despite this failed to translate that into an effective test-and-trace system during the first year of the pandemic.

Testing in the community stopped in March 2020 and for weeks during the first peak only those admitted to hospital were tested.