Cohesive shore platforms are an often overlooked component of many coastal systems. Their irreversible erosion plays a large part in controlling the recession rates of backing sea cliffs and can cause considerable problems for coastal managers when, for example, the process leads to undermining of coastal defence structures. This paper presents results from fieldwork campaigns that were undertaken at Warden Point (Kent) and Easington (East Riding of Yorkshire), incorporating measurements of platform down-wearing, biological activity, geotechnical properties and general beach form. Also presented are the results of a series of numerical model tests, investigating the interactions between cohesive shore platforms, beach volumes and rates of sea cliff recession. The paper concludes with preliminary guidance on the behaviour and management of these important coastal landforms.