Archaeological monitoring and recording was carried out during visitor improvement works at Mersea Barrow, West Mersea, in 2014 (the laying of an electricity supply cable for lighting within the barrow and the resurfacing of the access path leading up to the entrance into the barrow, on its eastern side) & 2016 (installation of an interpretation panel a short distance to the east of the barrow)(CBC planning application 101371). The cable trench extended for c.5.65m, from the gravelled track and vehicle turning area on the eastern side of the barrow, to the timber revetment baulk on the northern side of the entrance into the barrow. The trench was roughly 150mm wide and 300mm deep. Subsequently, an area was stripped by hand by the contractors, NCC Ltd and Lings, on 4th September 2014, in advance of the resurfacing of the access path on the eastern side of the barrow. The stripped area extended for approximately 6.5m east to west, from the gravelled track to the eastern ends of the timber baulks at the entrance to the barrow. The stripped area was dug roughly 150-200 mm deep, and was approximately 1.3m wide at its eastern end, widening out to 1.9m at its western end. The panel was mounted on a lectern with a single post. The post-hole for it was dug approximately 400 mm square and 500 mm deep. After the panel was installed, two paving slabs were laid at its base.<1> No significant archaeological deposits were uncovered, although a small quantity of Roman roof tile fragments was recovered from the modern topsoil on the eastern side of the barrow.