Below is a list of CCS's major clients:

ANZ Bank
Axa Sun Life
Bank of New York
Bankers Trust
Barclays Bank
British Standards Institution
CBRE
City Technology
Clifford Chance
Columbia Pictures Corporation Limited
Cyril Sweett Limited
Dearle and Henderson
DEKA
Drivers Jonas
Dun and Bradstreet
Edgerley Simpson Howe and Partners
Eil Lilly and Company Limited
Equitable Life Assurance Society
Ericsson
Fitzroy Robinson
FPD Savills
Gross Fine
Guardian Insurance
Harvey Spack Field
Hemingway Properties
ITT London and Edinburgh
Kenmore Group of Companies
Kvaerner Construction
Lloyds TSB Life Assurance Limited
Malcolm Hollis
McAleer & Rushe
MEPC
Morley/Telco Solutions
Prudential
Regus
Royal and Sun Alliance
Skanska
Slough Estates
Stubbs Rich Architects
Sun Life
Taylor Woodrow Developments
TeleCity
Weatherall Green and Smith
Wates Construction Limited
Windsor Life Assurance Company Limited
Vail Williams
Van den Berg Foods Limited