Overview

• Number 1 Plates experts warn parked car interiors exceeding 50 °C can turn plastic bottles into sources of BPA contamination and fire hazards.
• Open water bottles in heat accelerate bacterial growth, raising risks of stomach bugs and digestive infections.
• Over-the-counter medicines and sunscreen stored in high temperatures can degrade or burst, reducing efficacy and posing fire risks.
• The UK recorded its hottest day of 2025 with London reaching 34.7 °C, following England’s warmest June on record.
• Met Office climate projections indicate heatwaves will become more frequent and intense due to human influence, particularly in southeast England.