This archaeological desktop assessment was requested by Anglian Water Services Ltd to assess the likely impact of the construction of a 18.66km pipeline from King’s Delph Reservoir (NGR TL 234 960) to Linwood Reservoir (NGR TL 409 935). Evaluation of the archaeological, historical, aerial and cartographic evidence shows the proposed pipeline route crosses an area of deep fen, with archaeological and historical activity recorded at both ends. Currently, the majority of the route consists of drained agricultural land characterised by rectilinear fields defined by numerous drainage ditches, largely of post-17th century origin.