Eurostar is to cancel services this week because of industrial action in France (link below.)
http://news.bbc.co.uk/1/hi/england/7047502.stmSix services have been cancelled for Thursday , and other trains may also be affected by disruption - passengers have been advised not to travel.
Friday services will also be affected by strike action , Eurostar said.
Extra trains are still being laid on for people heading to Saturday's Rugby World Cup final in Paris , when 25,000 people are expected to travel.
A spokeswoman said 40% more passengers would use the cross-Channel rail service between midday on Thursday and Saturday afternoon, compared with the same time last year.
About 24,000 will travel back from France to the UK on Sunday and Monday , she added.