STRIKING dockers belted out Sweet Caroline on the picket line yesterday.
But the tone-deaf sing-song came as bosses warned of a stalemate on pay.
The walkout at Britain’s biggest container port is set to hit road, rail and shipping trade worth £700million.
Yesterday, just one crane was in action at the docks in Felixstowe, Suffolk.
Video shows a striker encouraging others to join in with the chorus of “good times never seemed so good”.
The previous day, strikers danced a conga.
But a transport operator at a nearby freight firm fumed: “This party atmosphere isn’t going to sit well with the public when we are all feeling the pinch.
“It could really backfire and people could turn on them if we see empty shelves for Christmas.
“It’s tone-deaf. How can you be singing and dancing about times being good when you’re protesting about times being bad?”
Just 100 workers joined the picket line yesterday, while two portable toilets were also brought in.
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Hutchison Ports has offered a seven per cent pay increase, plus £500 and extra bonuses.
But the Unite union refused it without consulting members earlier this month and is pushing for a ten per cent rise.
Paul Davey, head of corporate affairs for the Port of Felixstowe, said: “The people who are being hurt most by this strike are the workers. There are no winners.”