British Prime Minister Rishi Sunak on Monday vowed to do "whatever it takes" to keep his country safe, amid mounting fears that suspected Chinese spy balloons could also target the UK, a day after the US military shot down a fourth flying object over the American airspace.
During a hospital visit in northern England, Sunak said the UK was in constant contact with its allies across the Atlantic and remained in readiness for any safety response.
Sunak's response comes as his defence minister Ben Wallace confirmed the UK is launching a review into the security implications of the recent incursions into western airspace.