A King's Guard horse showed signs of severe overheating, prompting a soldier to sound an emergency alarm on Monday, July 12. The incident occurred as temperatures in central London reached 30 degrees Celsius (86 degrees Fahrenheit), a level of heat the United Kingdom has experienced multiple times during the summer of 2026, matching the number of 30C days recorded in the notable heatwave year of 1976.

The footage shows the guardsman on horseback outside the Household Cavalry Museum, with the horse's head drooping and its tongue momentarily protruding. Tourists observed as the soldier quickly pressed an emergency button.

Following the alarm, another soldier emerged from behind the gates to assist. The horse's legs appeared unsteady as it was led away from its post. The assisting soldier guided the rider and horse into the shade, away from the intense heat.

The video, which garnered over 200,000 views online, sparked reactions from viewers who expressed concern. Comments included sentiments that the situation "shouldn't be happening" and questions about response times to the alarm. Others suggested that the tradition should be reconsidered due to the extreme temperatures affecting both humans and animals.

This incident follows a similar event in May of the same year, during a heatwave that marked the hottest May Bank Holiday on record in the UK. At that time, a King's Guard horse became agitated outside Horse Guards Parade, circling erratically and tossing its head in front of startled tourists. On that occasion, another guard intervened to calm the distressed animal before it was led away.

A soldier emerged from behind the gates to assist the rider and his steed, guiding them to the safety of the shade