Contents:
- Lancashire County Council
- Laser-Scan Ltd
- Lear Siegler Inc
- Lectromec Controls Ltd
- Lee Engineering
- Leenshire Ltd
- Leigh Data Systems (Arcturus)
- Lektropatterns Ltd
- Lewis Security Systems Ltd
- LFE Computer Products Division
- Licon Electronics Ltd
- Linolex
- LinotypePaul
- Lion Systems Developments
- Arthur Little Inc.
- Litton Business Systems Ltd
- Livingstone Hire
- Harry Lockhart
- Lockheed Systems
- Logabax OEM (inc. Banda)
- Logica Data Systems
- Logistics Research Inc
- Lomac Adam
- Longines
- LowndesAjax
- Lundy Farrington Ltd
- Lyme Peripherals Ltd
- Lynwood Scientific Developments
- MAI Computer Systems
- Magnetic Components Ltd
- Mannesman
- Marcol Business Machines