High temperatures are forecast throughout the UK this week and may affect how our trains operate. To keep trains running reliably, we’ll be introducing a reduced timetable from Tuesday, 23 to Friday, 26 June, and temporary speed restrictions are in place on some routes. We strongly recommend that customers check before they travel.Extreme heat can affect both rail infrastructure and train performance.Higher temperatures increase the risk of faults and delays, which can make services less reliabl