- Camwood
 - Hackney - Application packaging outsourcing consultancy specializing in portfolio, distribution and component management services using MSI scripting and Windows Installer technology. - Digital Applications International (DAI)
- Westminster - Specializes in systems integration, enterprise application development and integration, automation and control, as well as validation and software management.
- Invensys PLC (5)
- Kensington Marketing Systems (KMS)
- Islington - Specializes in customer relationship management systems for organisations involved in project orientated and high value sales.
- Merlinco
- Westminster - Offers Merlin and Merlinplus survey and research products.
- Serverware
- Westminster - Specializes in enterprise software for the Windows NT environment.
- Timeslice Ltd
- Southwark - Develops software for solicitors including Lawman2000 incorporating practice management, legal accounting, case management, billing, and more.
- Wavepage
- Bromley - Develops e-commerce web sites and business software for the wireless Tablet PC, Pocket PC, and Smartphone.
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