Britain Breathing is a nationwide project aiming to better understand when the symptoms of allergies (such as hay fever) occur, what factors affect this and why they are increasing.

To do this, we need to collect data from lots of people on when and where their allergies (such as hay fever) occur. This will allow us to create a big database that we can combine with other information such as pollen counts or pollution data to build a better understanding of allergies and their triggers.

All you need to do is download the app, and then whenever you experience allergy symptoms, log these in the app - it should take less one minute.”