A "sub" market introduced in 1999 within the main market of the London Stock Exchange (LSE) for technology companies. techMARK companies are UK and non-UK companies with a primary listing on the Official List. They may be companies already listed or new applicants and must satisfy the LSE's general description of a technology company.
Practical Law Dictionary. Glossary of UK, US and international legal terms. www.practicallaw.com. 2010.