THE UK could see another 50,000 deaths from Covid-19 a top scientist advising the Government has warned, the day after the Prime Minister said he was “deeply sorry” for every life lost.

Boris Johnson insisted he takes “full responsibility” for the response to the pandemic and claimed the Government did “everything we could” to minimise suffering as the its figure for Covid deaths passed 100,000. Separate data published by statistics agencies places the toll at 115,000.

Labour leader Sir Keir Starmer said the milestone was a “national tragedy” and accused the Government of being “behind the curve at every stage” in its response to the pandemic, ahead of grilling Mr Johnson during Prime Minister’s Questions on Wednesday.

Professor Calum Semple, who sits on the Government’s Scientific Advisory Group for Emergencies (Sage), predicted there could be another 50,000 deaths from coronavirus, and warned that every Covid fatality “represents probably four or five people who survive but are damaged” by the disease, suggesting as many as half a million people may suffer from 'long-Covid'.

“It would really not surprise me if we’re looking at another 40-50,000 deaths before this burns out,” he said last night.

In March, before the Prime Minister announced the first national lockdown, chief scientific adviser Sir Patrick Vallance said keeping the death toll below 20,000 would be a “good outcome”.

Referring to the 100,000 deaths now surpassed, Mr Johnson said it was “hard to compute the sorrow contained in that grim statistic”.

Johnson added: "I am deeply sorry for every life that has been lost and of course as I was Prime Minister I take full responsibility for everything that the Government has done.

“What I can tell you is that we truly did everything we could, and continue to do everything that we can, to minimise loss of life and to minimise suffering in what has been a very, very difficult stage.

“It's a very, very difficult crisis for our country, and we will continue to do that, just as every government that is affected by this crisis around the world is continuing to do the same.”

England’s chief medical officer Professor Chris Whitty braced the country for “a lot more deaths over the next few weeks before the effects of the vaccines begin to be felt” and cautioned against relaxing restrictions “too early”.