Hounslow Council leader Steve Curran today supported the campaign to bring the Gloriana back to Brentford, as an alternative location in Twickenham emerged.
Richmond Council is consulting residents about building a dedicated mooring for the royal barge in Orleans Park, Twickenham.
But a public backlash to plans for a new boathouse, cafe and play area in the park prompted Brentford Chamber of Commerce to suggest Brentford, where the vessel was built, as an alternative home.
Its campaign has already won the backing of Brentford & Isleworth MP Mary Macleod and her Labour rival for the seat Ruth Cadbury, as well as receiving support from the council .
But today Mr Curran himself spoke up personally in support for the first time, saying: "It was built here, launched just upriver in Isleworth, and it would be a great addition to the town's regeneration as a tourist attraction with real local links.
"We will work with the Brentford Chamber of Commerce and all relevant authorities to help make this happen."
Meanwhile, Eel Pie Island, in Twickenham, has joined the list of potential homes for the boat should Orleans Park be rejected as a venue by residents.
An islander suggested Phoenix Wharf could host the barge, which led the Queen's Thames Diamond Jubilee Pageant in 2012.
Henry Harrison, who owns the land, today said: "I would certainly consider it if it didn't prove too unpopular with other islanders. Obviously we would need to consult people as it's quite a sensitive issue."
Mr Harrison declined to wave into the row about whether Brentford, where the boat was built, or Richmond, where its designer Mark Edwards lives, is its rightful home.
"I think Twickenham and Brentford would bother benefit from an attraction like that, but I don't have any view as to which would be the more appropriate location," he said.