In some cases, the ancillary services that grew up to service industrial clusters have remained in position and developed into vibrant new industries long after their original client industry has faded.

ECONOMIST: Idea: Clustering | The

With confidence that public service staff - the doctors, teachers, police officers, and the vital ancillary staff of all kinds - would rise to this challenge, with the better pay, training and incentives they needed and deserved.

BBC: NEWS | UK | Politics | Full text: Blair on public services