Housing development; the foundation for a post medieval wall lay N-S across the site.

The Town Wall was intially constructed free standing at an early date following the Boudican revolt, although the exact date is open to interpretation. Six gates were built into the wall, including the Balkerne Gate (MCC555) on the west side - the main gate - which incorporated a free-standing monumental arch (MCC718), as well as a series of rectangular towers and tile drains at the end of streets. An interior rampart was added in the late 2nd century AD and, at some point, a V-shaped defensive ditch was cut around the outer foot of the wall. This was modified in the late 3rd century, and two of the town gates were closed off. Major repairs were carried out in 1173-4. During the Middle Ages there were four main gates (along with two or three pedestrian gates) into the walled town, with the main gate on the south side near the south-west corner, Head Gate. A programme of repairs was initiated between c.1381-1413, including the addition of eight bastions on the south-east circuit (four survive above ground). Beside the four principal gates, there were two sherde (pedestrian) gates, on the north and south sides of the circuit, and another on the west side; no medieval gate structures survive above ground. The town wall and its gates suffered significant damage during the 1648 Siege.

Probable site of an early Anglo-Saxon cemetery indicated by Anglo-Saxon artefacts (grave goods) and skeletal remains discovered in 1971/72 by a metal detectorist.

Sherds of post-medieval stoneware, found at some point in the 1960s.

It is said that there was a small priory near West Mersea Church, known to have been established in 1046.

Mosaics and other Roman remains, indicative of a high status Roman villa-type building, have been frequently observed since they were first noted by Cromwell Mortimer in 1730.

Post-medieval hearth or oven discovered at the Red Lion Hotel, recorded in 1988.

Late medieval cellar discovered during excavations at Culver Street between 1981-2 and 1984-5.

77 East Hill was surveyed by Richard Shackle in 1994 during renovations and conversion (to a café with two flats above). The upper floor was substantially intact, apparently an 18th century warehouse made up of reused, some substantial, medieval timbers. The ground floor had been totally replaced.

Possible Bronze Age activity was revealed to the north of the excavation area, in the form of two ditches and small pits/post-holes, and several tree throws, probably later medieval in date and probably relating to Birch Park, were defined in advance of the construction of a water pipeline in 2011.