The strike has triggered warnings from several airlines and ferry firms, as well as Eurostar, with the impact likely to spill over into Wednesday (8 March).
Updated Foreign Office advice reads: "Several unions have called for rolling cross-sector strike action and demonstrations across France from Tuesday 7 March.
"Industrial action may start the evening before the strike day and run for several days. Localised or sector-specific strikes could also occur outside these dates.
"Industrial action may lead to disruption to services. Please check the latest advice with operators before travelling, avoid demonstrations and follow the advice of local authorities."
