Scope of fieldwork The site was subject to the proposed excavation of thirteen trenches, each measuring 10 m x 4 m, the locations of which are shown on Fig. 1. These were placed in order to provide samples of the range of possible archaeological deposits expected to be present on the site and of variations in the existing topography and ground conditions. Two trenches, numbers 8 and 11, were abandoned due to the presence of asbestos in the south-west corner of the site. Fieldwork methods and recording The trenches were excavated under archaeological supervision using a suitable mechanical excavator equipped with a toothless ditching bucket. Machine excavation proceeded to the top of the first archaeological horizon, or the upper levels of natural estuarine silts, whichever was encountered first. That level was hand cleaned. Spoil was scanned for artefacts. All features and deposits were issued with unique context numbers, and context recording was in accordance with the established OA Field Manual, (OA 1992) and IFA Guidance (IFA 1999). Colour transparency and black-and-white negative photographs were taken of all features. The stratigraphy of the trenches was recorded even where no archaeological deposits were identified. A project supervisor, one archaeologist and a geo-archaeologist, under the supervision of a project manager undertook the fieldwork. Monitoring of the evaluation was undertaken by the A.R.J. Hutcheson BSc MIFA, the Head of Archaeological Planning, Norfolk Landscape Archaeology. Finds Finds were recovered by hand during the course of the excavation and recorded by context. In January 2006, Oxford Archaeology (OA) carried out a field evaluation at land off Clenchwarton Road, West Lynn, King's Lynn, Norfolk (NGR TF 6070 1944), for CgMs Consulting. A total of eleven trenches out of a proposed thirteen were excavated. The evaluation revealed two possible post-medieval/medieval features and two undated clay lined pits, which all appear to represent specialist activities associated with metalworking. A section through the remains of medieval clay sea bank was also revealed.