Written Scheme of Investigation

A Written Scheme of Investigation (WSI) sets out the methodology and standards for archaeological work associated with a development project. KAS Archaeological Services prepares clear, professional WSIs that ensure archaeological investigations are properly planned, agreed with the relevant authorities, and carried out to recognised professional standards.

In the UK planning system, archaeological work required as part of a development - such as an evaluation, excavation, watching brief, or historic building survey - must normally be undertaken in accordance with an approved WSI. The document provides a detailed project design describing the scope of work, research aims, field methods, recording systems, reporting procedures, and arrangements for archive deposition. It ensures that all parties involved in the project - including developers, contractors, and archaeological advisors - have a clear understanding of how the work will be carried out.

A WSI is typically submitted to the Local Planning Authority or its archaeological advisor to discharge a planning condition relating to heritage. Once approved, it forms the agreed framework for the archaeological investigation and ensures that the work meets the requirements of national planning policy and relevant professional guidance. It also establishes procedures for health and safety, project management, and the treatment of finds and environmental samples.

KAS Archaeological Services prepares WSIs in accordance with the standards of the Chartered Institute for Archaeologists (CIfA) and the expectations of local planning authorities. Our documents are concise, practical, and tailored to the specific requirements of each development project. By setting out a robust and transparent plan for archaeological work, a WSI helps ensure that heritage considerations are responsibly managed while allowing development to proceed efficiently.