Visual communication is fundamental to all forms of design. Product and interaction designers use rough sketches to quickly communicate ideas. Architects produce high resolution digitally rendered images to predict what their buildings might end up looking like. In UX visualisation takes many forms including sketching, diagramming, photography, video and wireframing. The ability to encapsulate the key elements of a design in visual form enables ideas to be distributed and shared at multiple levels of resolution. Visualising the more abstract parts of design work such as strategy and process is an indispensable part of collaborative work and allows project partners to work quickly together. In UX we are often communicating research findings. The ability to do this in visual form supported by written annotation expresses the often messy nature of human behaviour.