The 2018 Train Surfing Wars: A Matter of Life and Death BBC 3 documentary follows a world-famous teenage Parkour group from Guildford, England, called Brewman.
The Parkour group do stunts on tall buildings and moving vehicles such as buses and trains, then publish clips of the action on the internet. Not long ago one their friends were killed in a train surfing incident. This documentary follows them as they deal with this and friendships going forward.