An archaeological assessment was conducted between October 2022 and January 2023, to inform plans for the proposed route of new mains electricity supply comprising an Overhead Line (OHL) and up to 5 km of underground sections in the Coquet Valley between Alwinton village and Blindburn farmstead It includes an Assessment of Heritage Significance and an Assessment of Impact. Specifically, it: " Defines the principal sources of information available for archaeological assessment (Section 3). " Presents a catalogue (Section 4) and chronological synthesis (Section 5) of archaeological data derived from various sources. Accompanying base maps locate established structures and features within, or in close proximity to, the development site. " Provides an assessment of archaeological potential with respect to the development site (Section 6). " Provides conclusions with respect to the known and potential archaeological significance of the development site (Section 7). " Recommends further work, to define more clearly the nature of the archaeological record and facilitate management or mitigation of this asset (Section 8). Assessment of the route has provided evidence for a total of 31 potential cultural heritage constraints along it, the majority of which refer to earthworks in or adjacent to the marked positions of individual poles shown on a works plan dated October, 2022. In addition, it is noted in some locations, notably at and south of the Scheduled Linbrig medieval site, that access works should take care to avoid earthworks between pole sites and between access roads and pole sites.