Wear A Hat Day is an annual event raising money to bring hope to brain tumour patients and their families. Every March, as Brain Tumour Awareness Month comes to a close, people from all walks of life put on their favourite hat at work, in school, with friends and family, and hold hat-themed events and make donations to Brain Tumour Research help find a cure for brain tumours, which kill more children and adults under the age of 40 than any other cancer.

The first Wear A Hat Day was held in 2010 and, since then, it has raised more than £2 million for Brain Tumour Research to help raise awareness of this devastating disease, campaign for the Government and larger charities to invest more, and fund ground-breaking research at Centres of Excellence where scientists are focused on improving treatments for patients and, ultimately, finding a cure.