Britain will grind to a halt this week as a three-day strike cripples the railways.
The chaos will hit kids taking their GCSEs, festival-goers heading to Glastonbury and workers trying to get to the office.
But hard-line unions have doubled down on the biggest rail strike in a generation as they warned services will be slashed to 20 per cent of their normal frequency.
Passengers have been urged not to travel unless absolutely necessary.
Half the railway network will shut down on Tuesday, Thursday and Saturday.
It’ll be the biggest walkout since the 1980s.
The union has admitted it’s causing the carnage to protect ancient rules which mean train staff only have to work 35 hours a week — the equivalent of seven hours a day.
The Centre for Economics and Business Research says strikes will cost the economy around £91million in staff absences alone.
More than 250,000 people won’t be able to get to work.
London will face the biggest hit, with a loss to the economy of £52million, it found.
Other estimates suggest the cost to the UK economy overall could be as much as £450million.
And UK Hospitality chief Kate Nicholls said the strikes will cost the tourism, leisure and theatre industries an astonishing £1billion.
She added: “This week’s strikes will add misery to many hospitality workers and businesses already struggling to make ends meet.”