A plume of sulphur dioxide (SO2) gas from a volcanic eruption in Iceland is set to affect parts of the UK, particularly the Midlands and southern regions, from Tuesday to Wednesday. The Met Office reports that while the gas had previously crossed the country, its impact on ground-level air quality remains low, with only small concentrations expected. Sulphur dioxide is known to cause respiratory issues, throat irritation, and other health problems, especially for vulnerable populations such as the elderly and those with asthma. The eruption, which is the sixth since December, has led to the evacuation of the nearby village of Grindavik, where lava flows have been observed. While authorities continue to monitor the situation, the Foreign Office has also issued travel warnings regarding the ongoing volcanic activity in Iceland. Overall, the public is advised to remain cautious as the SO2 cloud approaches the UK.