Size Matters: Notes towards a Better Understanding of the Value, Operation and Potential of Small Visual Arts Organisations is written by Sarah Thelwall, commissioned by Common Practice, London with support from Arts Council England. The paper seeks to articulate the value of small visual arts organisations within the wider arts ecology. The paper explores the significant potential these organisations have in the present cultural landscape and economy, also detailing the operational and investment challenges they face in realising this. Finally, it advocates a reconsideration of present assessment and investment practices. Common Practice, London is an advocacy group working for the recognition and fostering of the small-scale contemporary visual arts sector in London. The group aims to promote the value of the sector and its activities, act as a knowledge base and resource for members and affiliated organisations, and develop a dialogue with other visual art organisations on a local, national and international level.