By Jonathan Davies

The strike action affecting the channel crossing is set to cost the UK economy billions, with workers warning strikes could last all summer.

Thousands of lorries have been stuck in 30 mile queues outside Dover. Ferry workers suspended their strike yesterday (Thursday), which meant the queue was moved on. But with French unions threatening fresh action, they may not get very far.

P&O warned it would take at least until Saturday night to clear the backlog.

Tim Waggot, from the Port of Dover, said: "Our port handles trade to the value of £100 billion every year. Every day that this situation in France continues costs the UK at least £250 million. That is simply unacceptable and incredibly damaging."

Despite a suspension of the strikes, French unions have already warned that another could start on Tuesday and even said it could be the beginning of a "summer of disruption".