Scottish Labour sees chance of revival as polls show voters turn from Tories

The Scottish Labour leader Anas Sarwar says that Scotland was Labour’s original ‘red wall’. Photograph: Murdo MacLeod/The Guardian

With a brisk and bracingly cold sea breeze buffeting the red, green and yellow trade union flags in bright sunshine, the protest at P&O’s Scottish ferry port had the air of a labour movement revivalist rally.

Union leaders railed against P&O’s bosses and the Conservative government in Westminster, demanding legal action and boycotts, applauded by Labour’s leader in Scotland, Anas Sarwar, who then led the march to the shuttered P&O terminal at Cairnryan on the Irish Sea.