• Apex AC Ltd
  • APT Air Conditioning Ltd
  • Beta Valve Systems
  • Castle Point Air-Conditioning Ltd
  • CIAT UK Ltd
  • City of Windhoek - Namibia
  • Climate Services Ltd
  • Commercial Aerospace Services Co. Ltd
  • Concept Automation Ltd
  • Direction Fire & Building Services
  • Esmil Ltd
  • EI WHS Ltd
  • Ensys Ltd
  • Eurostar plc
 
  • GP Watson Ltd
  • Honeywell plc
  • Incontrol Ltd
  • Industrial Drives & Controls Ltd
  • JDW Ltd
  • JMT Installations Ltd
  • John Pointing & Sons Ltd
  • Leisure Maintenance Services Ltd
  • Maxwell Stewart plc
  • McQuay Service Ltd
  • Metropolitan Police Services
  • Mitie Scotgate Ltd
  • Nestle (UK) Ltd
  • Ocado Ltd
 
  • Printing & Graphic Machinery
  • Installations Ltd
  • Prolojik Ltd
  • Rank Hovis McDougal Ltd
  • Sapphire Omega Ltd
  • Serco Services Ltd
  • Southern Counties Chiller Services Ltd
  • Southern Electric Contracting Ltd
  • Star Refrigeration Ltd
  • Three Valleys Water plc
  • Tractabel Elyo Services Ltd
  • Vanderlande Industries Ltd
  • Watercare Utilities Ltd
  • York International Ltd