The UK Rail Accident Investigation Branch (RAIB) has published report №11/2026, dedicated to an incident at Bluebell Railway in East Sussex. The matter concerns unsafe locomotive movement during their coupling process, which occurred on 9 August 2025. Bluebell Railway is a heritage narrow-gauge railway operated as a tourist and museum attraction using steam locomotives and other historic rolling stock. Such lines, despite their heritage status, fall under safety regulation by national supervisory bodies, as they involve real locomotives and movement along railway tracks. In its report, RAIB provides a detailed analysis of the incident circumstances, establishes its causes, and offers recommendations to prevent similar occurrences in the future. The details of the incident itself, including the precise nature of the coupling procedure violation and potential consequences for staff or equipment, are not disclosed in the brief announcement — full information is contained in the report itself. Publication of such investigations is standard practice for RAIB, which regularly examines incidents on British railways, including heritage and tourist lines, with the aim of enhancing overall transport safety standards.