There is considerable existing guidance on the requirements for Land Quality Management on existing sites which provides the basis for developing plans and programmes. Nevertheless, it is often the case that aspects of a plan to manage radioactively contaminated land or restore a site are novel, so early engagement with regulators is very important. This engagement will shape the aspects considered in making the Environmental Safety Case. Whatever the details, a regulatory case will inevitably be a multidisciplinary document, drawing on different types of arguments and evidence. Our capabilities in site characterisation, risk assessment and decision making also mean that we can integrate underpinning documents and the overarching case is a seamless way.