She's one of Brent's community champions, but Ghanaian-born barrister Awula Serwah isn't afraid of taking on environmental issues globally - she's playing a leading role in a campaign to stop the government in her homeland from allowing a building boom in Accra to destroy the city's parks and gardens.
One of the UK's largest outdoor swimming pools was rediscovered in Northwick Park last month after a tip-off from a former swimmer led staff at a nearby hospital to investigate what happened to the famous bathing spot.
A cinema manager, a retired police officer and a psychotherapist are among the Brent climate rebels who helped bring the inner-city to a standstill earlier this month. Members of XR Brent told Freya Pickford who they are and what made them get involved.
A climber, campaigner and dad who has quite literally been shouting about Brent's dirty air from the mountaintops is urging motorists to switch off their engines at traffic lights and while stuck in queues.
Fifty members of Extinction Rebellion Brent, including a former police officer, a retired firefighter and a doctor, spent last week protesting against the government's perceived lack of action on climate change.