Zac Goldsmith MP joined the Mayor and hundreds of others in Barnes at a rally against Heathrow's third runway.
Richmond Council, which serves residents who live under the airport's flight path, is currently leading a referendum on the future of Heathrow.
More top news
Shoppers evacuated from Topshop in central London after a 'fire breaks out' in the basement
Police are appealing to find an absconder from a mental health unit in Haringey
Transport officials meet with Google in a bid to bring driverless cars to the streets London