Airlines have been pushing hard for restrictions to ease because sales of business-class and first-class seats – which generate the biggest profits.
The top speed would be 180mph and ‘minimal power’ would be needed to move hundreds of passengers, Brittany Ferries said.
The research also found that the average room rate per night was as high as £355 for the accommodation that remained available.
People in England can visit those destinations from May 17 without entering quarantine on their return, the Department for Transport said.
“These revelations are completely outrageous and the British people will rightly be furious."
“I think we are running a real risk if we do start to have lots of people going overseas in July and August because of the potential for bringing more of these new variants back into the country."
“It’s beyond belief that despite the pandemic these private train companies are still extracting fat profits and dividends out of the rail network, while staff at the front line are confronted with threats of a pay freeze and attacks on jobs, pensions and conditions."
Network Rail has urged passengers to ‘minimise travel’ over the Easter weekend.
The increase in the cost of rail travel “will not help commuters and city centres recover from the pandemic”.