A pre-determination trial-trenched evaluation (38 trial trenches across 10.32ha.) was undertaken by Colchester Archaeological Trust on land to the west of Dawes Lane, West Mersea, in 2019. This followed systematic fieldwalking/metal-detecting and geophysical survey.<1> Five post-medieval/modern field boundary ditches and six drainage gullies were revealed along with a medieval/post-medieval pit (F30 in T5), a possible Roman pit (F6 in T28), a possible prehistoric gully (F7 in T30) and 15 undated features (seven tree throws, four pits, two gullies and two ditches). Twelve small sherds of prehistoric handmade pottery (19g) was recovered from gully F7. There were two sherds (10g) of Roman pottery. Gully F25 contained a rim from a Cam 307 globular bowl/jar which dates from the late 2nd to the early 3rd or 4th century AD. A small possible sherd of coarse oxidised ware came from ditch F22. Two Staffordshire-type white earthenware plates or dishes, dating to the 19th-20th century, were recovered from ditches F2 and F22. There were 47 sherds (2.7kg) of ceramic building material (CBM) and this consisted of a variety of Roman (6 sherds), medieval and post-medieval material, mainly baked clay, peg-tile and Roman tile. Five worked flints were collected during the fieldwork. A small flake with three broken edges and a crazed ventral face was recovered from F22 and another small flake was recovered from F8. Three worked flints were recovered from the ploughsoil. A possible core was recovered from the ploughsoil in T34 and a small flake and a probable tool of convenience were recovered from T13. The tool appears to have a neat line of scraper retouch along one edge. The small assemblage indicates limited activity in the area in the later prehistoric period (probably Late Neolithic – Bronze Age). Two fragments of iron strip and two copper-alloy shotgun cartridge caps were found in ditch F23 and modern ditch F24 respectively. Two iron nails also came from post-medieval pit F30.