The need for formal languages to express and reason about spatial concepts is of crucial importance in many areas of AI and visual systems. The Qualitative Spatial Reasoning Group, University of Leeds was formed in 1990 and since then has conducted spatial reasoning research centred on the development and application of such languages - in particular the RCC spatial logic and its more expressive descendent Region Based Geometry (RBG). Our interests include: development of more expressive spatial languages; spatial ontologies; spatial vagueness, uncertainty and granularity; spatio-temporal reasoning and qualitative simulation; automated reasoning with spatial logics. Since time is often intextricably linked with spatial information, spatio-temporal generalisations of these issues are also of particular interest to the group and the formalisation of spatial change. Application areas of interest include Cognitive Vision and Geographical Information Science.