Companies who have engaged Holistic Services Group's services include:

• Australian Securities and Investment Commission (ASIC)
• Sydney Water
• Commonwealth Bank of Australia (CBA)
• Westpac
• Coca Cola Amatil
• Virgin Blue
• Lend Lease
• Baxter Healthcare
• OZEMAIL
• Hutchison Telecommunications ("3")
• Rail Infrastructure Corporation
• Department of Tourism Sport & Recreation
• Independent Commission Against Corruption (ICAC)
• NRL
• Baxter Healthcare
• Clifton's
• Symrise
• Simms
• Education AU
• Brightstar
• Attorney General's Department
• M&C Saatchi
• Ogilvy
• Department of Justice, Victoria
• Manningham City Council
• Canterbury College
• St Pius College
• Fairvale College
• Ricoh Australia
• O'Brien Glass
• Symantec (formerly VERITAS)
• Stockwells
• Verossity (formerly Spherion) and Sabre Pacific
• Australian Pesticides and Veterinary Medicines Authority (APVMA)
• Active Personnel & Consulting Pty Ltd
• TV Shopping Network (TVSN)
• NSW Attorney General's Department
• BNP Paribas
• Coca Cola Amatil
• Fantastic Furniture
• NSW Department of Local Government
• IAG (division of NRMA)
• IQPC
• "Living Now" Magazine
• Coles Myer
• Panthers
• QANTAS
• Shangri-La Hotel