Yes This interim report covers archaeological work undertaken at two Neolithic islet sites or crannogs, Loch Bhorgastail and Loch Langabhat, on the Isle of Lewis, Outer Hebrides, from 15-29 July 2017 (Figure 1). Fieldwork in 2017 included photogrammetric survey of both stone-built islets (under and above water), palaeoenvironmental coring of both loch beds, excavation at Loch Langabhat and vegetation clearance at Loch Bhorgastail. This work followed on directly from fieldwork carried out in 2016; the present report should therefore be read in conjunction with that report (Garrow, Sturt & Copper 2017). Our main results for fieldwork in 2017 included: • Construction of detailed 3D photogrammetric models of both sites • A better understanding of the construction techniques used in the creation of both islets • Recovery of c. 0.60m of core material from each loch for palaeoenvironmental assessment • The identification and excavation of occupation deposits and a small structure at Loch Langabhat Leverhume Trust; British Academy; Honor Frost Foundation