The BCS Workshop Series, previously published by John Wiley, aims to report developments of an advanced technical standard undertaken by members of the British Computer Society through the Society's study groups and conference organisation. The series should be compulsive reading for all those whose work or interest involves computing technology and for both undergraduate and postgraduate students. Individual volumes will mirror the quality of papers published in the BCS's technical periodical, The Computer Journal, and range widely across topics in computer hardware, software, applications, and management.