An archaeological evaluation of two trial-trenches was carried out at St Barnabas' Church, Lamarsh Road, Alphamstone, Essex in advance of the construction of a new shed housing a toilet and a flower arranging and mower storage area with associated services. The church is thought to pre-date the Norman invasion, and to have been built at the site of an earlier Anglo-Saxon minster church. There are several sarsen stones lie within the churchyard, which lies immediately to the north of the known site of a Roman villa complex. Excavations revealed a possible grave cut, a post-medieval or modern burial vault or funerary monument foundation and a modern pit.