Heatwave Warning: Train Operator Urges Passengers Not To Travel As Extreme Temperatures Hit Sussex

Train operator Govia Thameslink Railway (GTR) is warning passengers across Sussex not to travel unless absolutely necessary as a rare red extreme heat warning comes into force across parts of the UK.

The operator, which runs Thameslink, Southern, Great Northern and Gatwick Express services, says passengers should only make essential journeys on Wednesday and Thursday due to the dangerous conditions.

The warning follows advice from Network Rail after the Met Office issued a red alert for extreme heat, with temperatures forecast to approach 40°C as a “heat dome” sits over western Europe.

GTR has confirmed that Gatwick Express services will be suspended from early afternoon on both days, although Gatwick Airport will still be served by Thameslink and Southern services.

Speed restrictions are also being introduced across the rail network as a safety measure, meaning fewer trains will be running and disruption is expected.

The red warning, which is in place from 9am Wednesday until 9pm Thursday, indicates a high risk to life from the extreme weather.

Temperatures recorded on Tuesday already reached 34.6°C in parts of the South East, with the UK potentially set to break June heat records dating back to 1976.

Other operators, including Southeastern, have also urged passengers to avoid peak travel times as services to coastal areas are expected to be particularly busy.

Meanwhile, emergency services across the region are preparing for increased demand, with ambulance services warning of a likely surge in 999 calls during the heatwave.

Health officials and charities have also raised concerns for vulnerable groups, particularly older people, who are at higher risk of heat-related illness.

In West Sussex, councils have activated severe weather protocols, with extra support being made available for people sleeping rough, including access to shelters, shade and cold drinks in towns such as Littlehampton and Bognor Regis.

Several schools across the South East have also adjusted schedules or closed early to protect pupils during the extreme conditions.

The heatwave is expected to continue into Thursday, with officials urging the public to stay hydrated, avoid unnecessary travel and check on vulnerable neighbours.