Emergency services were called to the incident by Masefield Crescent today (October 24) at 11.44am.
A London Air Ambulance landed at Gidea Park Sports Ground and an injured man, whose age has not been confirmed at this time, was found.
He was pronounced dead at the scene.
Road closures are in place between A12 Eastern Avenue northbound from Masefield Crescent to Gallows Corner.
Eastern Avenue East southbound is also closed from Gallows Corner to Heath Drive.
The closure has been ongoing for over three hours.
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Separately, further traffic has been building up in the area closer to Romford Town Centre, due to a crash on Main Road.
It is closed between Oaklands Avenue and Erroll Road, with four bus routes diverted.
A London Ambulance Service spokesperson said: “We were called at 11.44am on Saturday 24 October to reports of a road traffic collision near Masefield Crescent, RM3.”
“We sent resources to the scene, including ambulance crews, an incident response officer and an advanced paramedic practitioner. We also dispatched a trauma team from London’s Air Ambulance.
“Very sadly, despite the best efforts of our crews, a man was pronounced dead at the scene.”
The Metropolitan Police has been approached for further information.