Technology
- 3Com (Now a Part of Hewlett Packard Enterprise)
- Access 24
- ACI Worldwide
- Agresso (Now a Part of Unit4)
- Appsolut
- Assima (f.k.a. DA Consulting Group)
- Bayer (f.k.a. Bayer-Schering)
- BioIndustry Association
- BlackBerry Limited (f.k.a. Research in Motion)
- Blaze Software
- Braindoc
- British Telecom
- Cable & Wireless Communications (f.k.a. Cable & Wireless plc.)
- CAST
- Cnet
- CenturyLink (f.k.a. Level 3)
- CERT Group of companies
- CIGNA
- Cisco
- Clarify
- Commuting Devices Company Ltd
- Compaq
- Computer Associates
- Computron
- Corel
- Cranfield Innovative Manufacturing Limited
- Datacore
- Defence Equipment Sales Authority (f.k.a. Disposal Services Authority) (Ministry of Defence)
- Dell EMC (f.k.a. EMC)
- Edinburgh Technology Fund Ltd
- Eland Technologies
- Epson
- Ericsson
- ETC (f.k.a. Enrichment Technology)
- Eyretel Ltd (Now a Part of Witness Systems, Inc.)
- Foundry
- Foundation Software Solutions
- GSK
- Hitachi Europe Limited
- HP Information Security (f.k.a. Vistorm)
- IBM UK Ltd
- Ideal Hardware plc
- iGTB/Intellect Design Arena
- Informatica
- Internet Systems Limited
- Interxion
- Ivanti (f.k.a. Appsense)
- KR Energy (f.k.a. PCU Italia)
- Liquent (Now a Part of Parexel)
- Messaging Direct
- Metrodata
- MTI
- NETg
- Netigy
- NMD
- Novartis International AG
- OKI Systems (UK) Ltd
- OneStopHit
- Palmer & Webb Systems
- Prism
- QinetiQ
- Quadriga
- Quantum ATL
- Rainfinity (Now a Part of Dell EMC)
- RedstoneConnect MS (f.k.a. Commensus)
- RSA Security
- SAP BusinessObjects (f.k.a. BusinessObjects)
- Siebel (Now a Part of Oracle)
- Siemens
- Skillsoft
- Smartlogic
- Sobaco Informatik
- Softbank PSC
- Software AG UK Ltd
- SQS / SIM
- Staffware
- Sun Microsystems (Now a Part of Oracle)
- Taskforce 2000
- Thales Information Systems
- Unisys
- Univation
- Veritas DGC (Now a Part of CGG)
- Versata
- Vodafone
- Win Technologies (Now a Part of the Betway Group)
- Wyse Technology Ltd (Now a Part of Dell)
- Westcon
- Zaroo.com plc