LONDON (AP) — The British government is under pressure to develop a national strategy to combat a surge of COVID-19 cases and “rescue Christmas’’ as scientists warn that the number of people hospitalized with the disease in the U.K. could almost triple by the end of next month unless something more is done now.

Mark Walport, a former chief scientific officer, said Britain only needs to look across the English Channel to see what’s coming. Britain’s current measures are similar to those in France and Spain, where authorities are struggling to control the virus and daily cases have already far outstripped those in the U.K.

“With our current measures … there’s little evidence that there is as much social distancing as there was when we clamped down on the first wave and so we know that the risk is significant that cases will continue to grow,” Walport told the BBC.

It is “not unrealistic’’ that 25,000 people in the U.K. could be hospitalized by the end of November — up from about 9,000 now, he said.

The World Health Organization said for the second consecutive week, the European region accounted for the biggest proportion of new infections, with more than 1.3 million cases or about 46% of the worldwide total. The U.N. health agency also said deaths were also on the rise in Europe, with about a 35% spike since the previous week, and hospitalizations and ICU occupancy due to COVID-19 increased in 21 countries across Europe.

Walport’s assessment came as two opposition parties called on Prime Minister Boris Johnson to convene a summit of the U.K.’s four nations to develop a coordinated plan for combatting COVID-19.

Under the U.K.’s system of devolved government, Northern Ireland, Scotland and Wales have all developed their own rules to fight the pandemic. Meanwhile, Johnson has implement a three-tiered regional strategy to applies only in England. That has a led to a patchwork of regulations that change from one nation to the next, and sometimes from city to city.

Liberal Democrat leader Ed Davey said the four nations must develop a unified strategy to avoid confusion and deliver a clear message. The Liberal Democrats and Northern Ireland’s Alliance Party have written to Johnson asking for a summit.

“I think they need to have some action now … because otherwise, if we don’t get the virus back under control, I’m afraid there’s little chance of being able to rescue Christmas,” Davey told the BBC.

Britain already has Europe’s highest virus death toll, with over 45,400 confirmed deaths.

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