HDDA has provided creative services for the following clients:

British Airways
BUPA
Chiltern Railways
Cross River Partnership
Department of Trade & Industry
Department for Work & Pensions
Eterna Watches
Eurofins Scientific Ltd
ExxonMobil Corporation
Guild of Business Travel Agents
Hülsta Furniture
IBM
International Fund for Animal Welfare (IFAW)
Laboratory of the Government Chemist (LGC)
Leander Rowing Club
LionHeart (RICS Benevolent Fund)
London Development Agency (LDA)
Metropolitan Police
Nexus Choat - PR
NOON Foods Ltd
Office of Fair Trading
Ovum Ltd - Publishers
Proud Galleries
Royal Institution of Chartered Surveyors
Saunders & Shepherd - Goldsmiths
Stanley Hicks - Chartered Surveyors
The Pensions Ombudsman
The Travel Company
Towers Perrin - Global Management Consultants
UKOOA (UK Offshore Operators Association)
United Kingdom Accreditation Service (UKAS)
Westminster City Council
William Ransom & Son plc (Consumer Healthcare)
Woolworths plc