Rail passengers are being advised to travel only if their journeys are essential ahead of an approaching heatwave across the UK. East Midlands Railway says it is urging passengers to avoid unnecessary trips as hotter conditions build over the coming week. The warning comes as the UK enters what multiple outlets describe as a third heatwave in as many months. Temperatures are forecast to rise further later this week, with some areas expected to reach around 35°C. The reports emphasize that the guidance is intended to help reduce demand and associated pressure on rail services during periods of extreme heat. While details of specific operational changes are not provided in the excerpts, the common message from the outlets is that passengers should consider whether travel is necessary, and otherwise defer journeys during the highest temperatures. The guidance is framed as a precautionary step tied to the expected weather conditions and the wider spread of the heatwave.