LONDON: Britain's legendary 95-year-old Queen Elizabeth spent a night in hospital for the first time in years for what royal officials termed 'preliminary investigations' but was in good spirits and back at work at her Windsor Castle home on Thursday. The world's oldest and longest-reigning monarch cancelled an official vogage to Northern Ireland on Wednesday. The palace said the queen had been told to rest by her medical staff, and that her ailment was not related to Covid-19.

"Following medical advice to rest for a few days, the Queen attended hospital on Wednesday afternoon for some preliminary investigations, returning to Windsor Castle at lunchtime today, and remains in good spirits," the spokesperson's statement said. A source with Buckingham Palace said that the hospital visit was not initially announced because it was going to be a short stay, and noted that the Queen is allowed medical privacy. The Queen was reportedly back undertaking light duties on Thursday afternoon. Queen Elizabeth II spent Wednesday night at a hospital while undergoing "preliminary investigations," said a Buckingham Palace spokesperson.

On Tuesday evening, the Queen hosted a reception at Windsor for global business leaders who were attending a government investment summit, including Microsoft's co-founder and billionaire Bill Gates and senior British ministers.

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