Tree drone survey for Network Rail Central Route

The purpose of this project is to seek a Supplier to deliver a comprehensive Lineside Tree Survey across Northwest & Central Region – Central Route network. The survey covers all land where trees may impact railway operations, including Network Rail–owned land and adjacent lineside neighbour areas. The objective is to identify hazardous trees, leaf-fall risk, and Ash Dieback (ADB) presence, ensuring a robust understanding of vegetation-related risks across the route. Central Route network is to be surveyed by the end of the current Control Period, supporting a continuous inspection cycle. Survey outputs will form a detailed asset inventory for upload to Ellipse and any future Network Rail master asset register. Survey data shall be submitted at four-weekly intervals.