Thousands of passengers travelling to and from Gatwick Airport were plunged into travel chaos after engineers discovered dangerous sinkholes beneath a key stretch of railway line, forcing an emergency shutdown of one of Britain’s busiest transport corridors.
The disruption unfolded when Network Rail engineers carrying out scheduled maintenance work near Purley uncovered several sinkholes beneath a bridge supporting the railway between Purley and East Croydon. The discovery triggered an immediate closure of all lines through the area amid fears the track had become unstable.
For travellers heading to Gatwick Airport, the timing could scarcely have been worse.
Services between London and the airport were abruptly halted, leaving holidaymakers dragging suitcases through packed stations, scrambling for replacement buses and desperately searching for alternative routes. The prestigious Gatwick Express service was among those suspended, cutting off one of the capital’s most important airport links.
Avoid Gatwick Airport (if possible) totally gridlocked due to a Railway Subsidence/Sinkhole causing thousands of cars to attend the airport, police dealing #gatwick @SussexTW pic.twitter.com/gFw69K6wDT
— eddie mitchell (@brightonsnapper) June 14, 2026
Network Rail said ballast — the stones supporting the railway tracks — had begun falling through gaps created by the sinkholes, raising serious safety concerns.
“Sink holes were spotted on the bridge, meaning that ballast, the stones that the track sits on, was falling through the gap, making the track unstable,” the organisation said.
Engineers immediately closed the route while structural specialists assessed the damage and emergency repair work began.
The shutdown created widespread disruption across the Southern rail network, with services cancelled or diverted throughout Sussex and south London. Stations including Reedham, Coulsdon Town, Woodmansterne, Chipstead, Kingswood, Tadworth and Tattenham Corner were left without trains.
At Gatwick Airport, passengers faced lengthy queues for replacement transport as airport officials warned travellers to allow significantly more time for their journeys.
A spokesman for the airport said there were no rail services operating to either London Victoria or London Bridge, forcing many passengers onto already congested roads.
The disruption quickly spilled beyond the railway network.
Large queues at @Gatwick_Airport for replacement buses. The main still shut between Gatwick and East Croydon with southern rail having a DO NOT TRAVEL warning in place.@SussexTW pic.twitter.com/OtPvTnB1fi
— Sussex News – Breaking news for Sussex (@SussexIncidents) June 14, 2026
Motorists reported severe congestion around the airport as hundreds of additional vehicles attempted to drop off and collect passengers stranded by the rail shutdown. Taxi demand surged while replacement bus services struggled to cope with the sudden influx of travellers.
Southern Railway advised customers to avoid travelling wherever possible, directing passengers towards lengthy diversionary routes via Waterloo, Havant and Hastings.
The incident also raises fresh questions about the resilience of Britain’s ageing infrastructure.
While sinkholes are relatively rare on major rail routes, they can emerge unexpectedly due to ground movement, water damage or deterioration beneath structures. The discovery near Purley highlights the growing challenge facing rail operators tasked with maintaining Victorian-era infrastructure under increasing pressure from weather extremes and heavy passenger demand.
Massive queues now at #gatwick 100s of people waiting for buses as NO trains bwtween Gatwick and Esst Croydon due to a sink hole. @SussexTW pic.twitter.com/pVUXeeWcWv
— Sussex News – Breaking news for Sussex (@SussexIncidents) June 14, 2026
After a frantic race against time, engineers completed emergency repairs overnight and National Rail confirmed shortly after 2am on Monday that services had resumed.
But for thousands of passengers whose weekend journeys were wrecked by the sudden closure, the disruption served as another reminder of how a single infrastructure failure can bring a critical transport artery to a standstill within minutes.
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