Brits have basked in warm, sunny weather for the past week but forecasters this week have predicted that thunderstorms will batter most of the country.
At the same time many areas are expected to experience high pollen counts, which trigger allergies such as hay fever and can increase asthma symptoms.
And that means people who suffer from asthma could be at risk of deadly attacks.
Allergy Therapeutics plc (LON:AGY) is a market-leading, pioneering immunology business with specialist experience in the research and development of allergy treatments.