During his time there he built Scottish Pacific to have greater than 50% of the Australian invoice discounting and factoring market share, to approximately $4 billion in annual volume.
Isenberg was also chairman of Factors Chain International (now known as FCI), an international association of more than 400 leading banks and other cash flow financiers excess of 80 countries, actively engaged in more than 80% of the world's cross-border factoring volume.
[2] Isenberg was the founder and past chairman of the Institute for Factors and Discounters of Australia and New Zealand, now known as the Debtor and Invoice Finance Association.
The organisation was formed in 1994 to represent the major providers of the debtor finance market.
Clive oversaw the National Hires acquisition of both Allight Holdings Pty Ltd and Sykes Group.