Lobby group the Confederation of British Industry have produced a report claiming controversial London night flights must be protected.
The Government is currently carrying out a consultation into the impact of night flights.
Protestors want flights at Heathrow to be banned between 11pm and 6am
John Stewart, chairman of the Heathrow Association for the Control of Aircraft Noise, said: "You don't need an alarm clock living under the flightpath. The first plane coming over at 4.30 in the morning is your alarm clock.
The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Police have arrested a man wanted in connection with a burglary at the home of pensioner Richard Osborn-Brooks.
The rally comes after it emerged that the Home Office destroyed thousands of landing cards documenting the arrival of windrush-era migrants