Between July and December 2019 Oxford Archaeology East (OA East) carried out an openarea excavation on 4.6ha of land south of Gidding Road, Sawtry, Cambridgeshire (TL 1623 8329), in advance of residential development. The excavation was commissioned by RPS Consulting on behalf of Bovis Homes and followed on from preliminary works including geophysical survey, a DeskBased Assessment and evaluation trenching. The principal phases of activity occurred during the Late Iron Age and the RomanoBritish period, when part of a farmstead developed on either side of a northeast to southwest orientated winterbourne. During the Late Iron Age (Phase 1), in the south of the site, a group of three roundhouses and a small enclosure were constructed along the line of a sinuous boundary ditch. Dating evidence from Late Iron Age features was rare, with later Iron Age pottery totalling 20 sherds (225g). RomanoBritish activity was mainly concentrated in the north of the site, in contrast to the Late Iron Age features. This activity began in the midlate 1st century AD with the setting out of a rectilinear field system and associated trackway in the area directly north of the winterbourne (Phase 2). During the 2nd century AD (Phase 3) the rectilinear field system developed along similar lines to the 1st century. However, it did appear to expand further northwards, towards and probably beyond Gidding Road, forming part of the settlement uncovered at Glebe Farm to the north. Discrete pits and waterholes were more numerous in Phase 3 and whilst no significant buildings were encountered, there was one linear arrangement of four post holes that may have been structural. The pottery evidence demonstrates that activity at the site peaked in the 1st and 2nd centuries, with 97% of the whole assemblage (4913 sherds, 55331g) dating to Phases 23. After the late 2nd century AD, the level of activity significantly declined; features that were clearly dated between the later 2nd4th century AD were restricted to a midden deposit and a large pit or waterhole along the northern edge of excavation. Limited landuse continued into the Early AngloSaxon period, evidenced by a small assemblage of pottery (24 sherds, 537g) in earlier features. Ridge and furrow agriculture was evident at the site during the postmedieval period.