Eurostar is offering passengers who do not want to travel to Brussels due to the heightened security alert in the city the option to exchange their tickets without penalty.
The option is being made available for anyone planning to travel up to and including November 30.
The high-speed channel tunnel passenger train operator continues to run a normal schedule to the Belgian capital, which has been in lockdown since the weekend amid fears of a terrorist attack.
Eurostar said: “Due to a heightened state of security in Brussels, some local transport may not run and some events within the city may be cancelled.
“It is expected that the metro will start to operate from Wednesday 25th November and that some attractions will re-open.
“We recognise that our travellers may wish to change their plans within this period and so if travelling to Brussels any day up to and including Monday 30th November, whilst we will be running a full service, if you wish to exchange your tickets for another date and time you have 60 days to do this free of charge.”
Meanwhile, P&O Cruises issued a statement on Facebook saying: “A small number of guests have raised concerns over how the current situation in Belgium affects their upcoming cruises, please be assured we are monitoring the situation closely and if we make any changes to itineraries we will advise customers accordingly.”