London's Heathrow Airport closed for after a nearby fire caused a major power outage at the facility. More than 1,300 flights were canceled, with hundreds of thousands of passengers affected.
Jet fuel is spilling into the North Sea after a U.S.-flagged fuel tanker collided with a cargo ship off the eastern coast of England. Thirty-seven people have been brought to shore.
In his visit on Thursday, the prime minister will try to leverage the U.K.'s so-called "special relationship" with U.S. and act as a bridge between the Trump administration and U.S. allies in Europe.
Pope Francis' condition remains critical but stable and he was able to do some work while still in the hospital with double pneumonia, the Vatican said in a Tuesday evening update.