The UK Foreign Office has updated its advice and issued a warning to people travelling to France.
On Saturday, December 10, the government department added a new alert to anyone visiting the EU country. Updating its summary page, it warned about upcoming strikes.
While Eurostar is not affected by the Border Force walkout, the RMT union has announced strikes on December 16, 18, 22 and 23 for its members who are employed as security staff by private contractor Mitie at London St Pancras International.