My friend Mathew Frith, an urban nature conservationist, who has died aged 64 from a glioblastoma (brain tumour), was best known for his work in London, but leaves a national legacy of championing urban nature, pioneering citizen science, saving wildlife sites from development, and improving public access to green space.
In 1989 he joined the staff of the London Wildlife Trust, a charity founded on a vision for a greener, more inclusive city. As warden of Sydenham Hill Wood from 1990 to 1995, Mathew managed volunteers and learned how an urban woodland “works”.
