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The Sampson and Goliath cranes from the nearby shipyards towered over the set but the dragons left them alone.

The tenements at Clune Park in the Inverclyde town of Port Glasgow were built a century ago as housing for shipyard workers but have lain mostly abandoned for years.

While preparatory works have begun on the former shipyard site in Pallion, next to the Northern Spire bridge, construction of the studios is yet to start.

Ferguson's, the last commercial shipyard on the Clyde, had vowed to bid "aggressively" for the contract and had made it onto a shortlist of six bidders.

The order for Glen Sannox and another ship were placed with the Ferguson shipyard in Port Glasgow nearly a decade ago.