A partnership including the University of East Anglia, the Forestry Commission and the Woodland Trust has created an excellent mobile application to help you identify Chalara Fraxinea, or ash dieback disease.
Using the simple ID guide to identify the disease, the app also helps you upload a photo of a suspect tree directly to an online database, which will then be checked by experts.
The Ash Tag website has further information on identifying the disease, and if you don't have an iPhone or Android device, you can use it to report sightings online. It also has an on line map showing all reported incidences; luckily there are no reported cases along the Cotswold Way as yet - with your help we might be able to keep it that way.
Visit the website here.