Thousands of cross-channel ferry passengers had their bookings amended in order to accommodate extra journeys in case of a no-deal Brexit.
There were passengers who took to social media after the company got in touch to tell them their sailings had been cancelled.
The ferry firm said about 10,000 clients were affected.
In December 2018, the government announced it was awarding GBP 102.9 million to 3 suppliers to provide extra capacity in order to ease congestion at Dover in case the United Kingdom leaves the European Union without a deal on March 29.
The French company of Brittany Ferries was awarded GBP 46.6 million, GBP 42.5 million was awarded to Danish shipping company DFDS and GBP 13.8 million to British company Seaborne Freight.
The affected Brittany routes (and ships) are: