BBC Scotland's political editor is sharing his experience of living with a brain tumour in a new documentary.

The documentary, titled My Brain Tumour and Me, airs at 7pm this evening (Wednesday) on BBC One Scotland.

Glenn Campbell, who lives near North Berwick, fell off his bike on a country road in East Lothian in June last year, suffering broken bones.

Six weeks after this accident, just as he was preparing to return to work, he had a seizure.

This led to the diagnosis that changed his life.

READ MORE: BBC's Glenn Campbell's incurable brain cancer diagnosis

In this new film, Mr Campbell shares his journey and sheds light on the limited advancements in treatments for the condition.

Mr Campbell said: "It’s a golden rule as a journalist not to become the story, but in this case, I just felt that it was worth sharing my personal experience as a way of putting a bit of a spotlight on this most difficult of cancers."

He underwent surgery to remove the malignant tumour, followed by radiotherapy and chemotherapy.

Despite the successful surgery, he lives with the constant threat of seizures and has chosen to share personal footage of one such episode.

Brain cancer is the biggest cancer killer of people under 40, with 33 people in the UK diagnosed with a brain tumour every day.

Mr Campbell has dedicated the past year to raising awareness of this often-misunderstood cancer.

READ MORE: Glenn Campbell organises art sale for brain tumour charity

Reflecting on his journey, he said: "You realise what really matters, and maybe what doesn’t quite so much.

"What really matters is family, and friends and good times and making memories, and what maybe doesn’t matter is the hubbub of everyday life, work and chores… and I think being told you’ve got a life-limiting condition really puts that into perspective."

The film offers an intimate look at Mr Campbell's life as he navigates his diagnosis and treatment.

He hopes that by sharing his story, he can help raise awareness and understanding of brain cancer.