Stagecoach, which operates trains an buses in the UK and on the continent, has said the Paris terror attacks are behind slowing revenue growth as people avoid travelling to major cities.
Stagecoach said that since mid-November, it has seen a reduction in the rate of revenue growth in parts of our rail and inter-city coach operations in the UK and continental Europe.
"We believe that revenue has been adversely affected by the terrorist attacks in Paris discouraging people from travelling to major cities," said Martin Griffiths, chief executive.
Terrorists belonging to Islamic State killed 130 people in co-ordinated attacks in Paris on November 13.
Stagecoach said it expected these rates to recover in the short term, but that it was adjusting its forecasts for average earning per share in light of the changes.
A spokeswoman from TfL said that Londoners have not changes their travelling habits since the Paris attacks.
The London transport network broke its record for its busiest day on December 4, three weeks after the attacks, with 4.821 million customers.
TfL said it expects the record to be broken again before the year is out.
