Dockers at Stanlow refinery in Cheshire have refused to unload a shipment of Russian oil.
Unite said it had informed the owner of the Ellesmere refinery, India's Essar Group, that its members would 'under no circumstances unload any Russian oil regardless of the nationality of the vessel which delivers it' in protest at the invasion of Ukraine.
It comes as a tanker sailing under a German flag and understood to be carrying Russian oil was heading for the terminal.