Last year's summer season was marked by widespread travel disruption.
However, there are different headaches this year, which could mean further disruption, although not necessarily on the scale of last year's problems. But proposed summer strike action by security workers at Heathrow was called off after the Unite union accepted an improved pay offer.remains, but no dates have been set. The union involved told the BBC it hopes to reach an agreement with the employer.The air traffic control environment is "challenging", according to Willie Walsh, who heads up global airline body Iata.
"Indeed one European airline CEO told me that the whole of European air traffic control except the UK was 'a mess'." The level of disruption during these strikes will vary around the country. Many will run reduced services.When are the train strikes and which lines are affected?