This collection comprises reports, images, site records, spreadsheets, a vector drawing, and a database from a trial trench evaluation at Grafham Water Solar Array, Cambridgeshire undertaken by Oxford Archaeology East in October and November 2018. A total of 35 trenches were excavated across three fields with 12 of the trenches yielding archaeological features.

A total of eight trenches were excavated within Field 1, many of which were targeted across known cropmarks. Previous evaluation and excavation work had taken place in this field and this evaluation further identified evidence of settlement features dating from the Middle Iron Age and Roman periods. Features uncovered comprised ditches, gullies, pits, post-holes and a hollow, many of which yielded finds, including pottery, animal bone, fired clay, stone and metalwork. Only two features towards the south of the field were dated to the Middle Iron Age, possibly representing peripheral Middle Iron Age settlement activity. No Late Iron Age pottery was recovered although Early to Mid Roman pottery was found in a small number of features in this field, with a clear concentration being recorded in Trenches 1 and 2 in the north-west of the site.

A peak of settlement activity was evident during the Mid to Late Roman period, with settlement features centred upon a pair of square or rectangular enclosures in the centre of the site, previously identified as cropmarks. Evidence of possible structures and settlement related features was identified within these enclosures. Large pottery assemblages were recovered from these ditches and a number of isolated features were also revealed.

Only a single possible pit was recorded in Field 2, which yielded no finds. Field 3, although containing the largest number of trenches (22), only revealed three features; two ditches and a pit. As with Field 2, these features contained no finds.