Overview
- Rail operators closed a tunnel between Hayes & Harlington and Heathrow Terminals 4/5 after a water leak, and Transport for London reported no Elizabeth line trains running on that section on Monday morning.
- Network Rail and Heathrow Express ran a reduced service, with Heathrow Express operating two trains per hour to Terminal 5, and National Rail warned of major disruption expected through the day.
- Passengers were advised to use the Piccadilly line, Great Western Railway services or specified bus routes, and operators said they would accept tickets on alternative services to help people reach Heathrow.
- A separate fire beside the track near Purley disrupted Southern, Thameslink and Gatwick Express services until early afternoon, compounding airport rail problems for Gatwick travellers.
- Commuters reported confusion after some stations were described as flooded despite a dry spell, and the closure highlights how a single infrastructure fault can sharply increase journey times, strain alternatives and raise the risk of missed flights and connections.