Enfield Council says it has carried out extensive works over the years to protect the historic Oak, but even more needed to be done. Councillor Chris Bond, said:
"Our primary objective is to save this fantastic natural monument which predates the Magna Carta. Doing nothing is not an option, because unless we take decisive action, this historic and much loved tree will fall over.
"If that were to happen the it would cause extensive damage to the park and potentially damage nearby homes. "The action we are proposing, while drastic, gives the tree a good chance of recovery and means that future generations can enjoy it for years to come."
More top news
An ITV News journalist worked as a Deliveroo rider to see what it's like - from induction to cycling through traffic and making deliveries.
Sutton United substitute goalkeeper Wayne Shaw has offered his resignation after eating a pie during a match.
Brixton's tribute to David Bowie will be a gravity-defying structure standing three storeys tall.