It was one of the earliest ISPs , one of the UK 's first , especially targeting the `` dialup '' audience starting on 1 June 1992 from an idea posted on CIX by Cliff Stanford of Demon Systems Ltd. It was one of the UK 's earliest ISPs , especially targeting the `` dialup '' audience . It started on 1 June 1992 from an idea posted on CIX by Cliff Stanford of Demon Systems Ltd. .