Overview

• Emergency crews were called at 12:11 to Steels Lane in Oxshott, with three fire and rescue vehicles and three officers attending.
• Officials said the cloud formed after two swimming-pool ingredients were mixed, prompting a public warning to remain indoors.
• A fire service map highlighted a dark purple zone where residents were advised to close windows and stay inside.
• The service later confirmed the chemicals were contained and the risk had passed at about 15:42, lifting the advice to keep windows shut.
• A spokesperson said a visible fire and rescue presence may remain through the day while teams monitor conditions.