The 4 train operators saying only travel 'if absolutely necessary' as Friday's temperature shoots up (opens original article in a new tab)

Train operators in London advise against non-essential travel amid extreme heat, with service disruptions and safety concerns.

• Train operators urge passengers to avoid non-essential travel due to extreme heat
• Southern and other train services face cancellations and reduced timetables
• Heat causes railway issues like buckled rails and overheated engines
• RAC reports increased vehicle breakdowns due to high temperatures