Royal Park must be protected from future plans to dig it up for the East West Link, Melbourne City Council has been warned amid continuing pressure from Canberra to build the controversial tollway.

A report commissioned by Melbourne City Council, released under freedom of information, shows its consultants warning Royal Park is at risk from the toll road being built one day.

The report by transport planners Phillip Boyle and Associates was released in August under FOI to a local parks campaigner, and later posted on the council's website.

Part of the first masterplan for the park in two decades, it recommends removing any link running off Elliott Avenue – the arterial road cutting through Royal Park.