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Grosvenor Technology has been developing and manufacturing workforce management and access control solutions for organisations around the world since 1989. Our timeclock heritage stretches back further still - to 1971, when predecessor company Custom Micro produced its first workforce data terminal. As part of Newmark Security PLC, we combine over 50 years of engineering heritage with a forward-looking approach to hardware, software and integration - delivering solutions that are reliable, scalable and built for the way modern organisations operate. We work in close partnership with our customers, installers and HCM platform partners, supporting every stage from specification through to installation and ongoing support. Access Control Our JanusC4 access control platform is designed for simplicity, scalability and long-term reliability. From single-door installations to complex multi-site enterprises, JanusC4 delivers granular role-based access control, seamless third-party integrations - including fire, CCTV and building management systems - and multilingual software that works as well in a school as it does in a global headquarters. JanusC4 is listed on NBS Source, making specification straightforward for architects, engineers and construction professionals across the UK. Workforce Management Our advanced timeclock terminals and GT Time platform give organisations the tools to capture accurate workforce data at the edge - across single or multiple sites, in any environment. GT Time is a secure, cloud-based solution that integrates our market-leading timeclock hardware with leading HCM platforms, including Oracle and Workday, with GT Connect middleware ensuring those integrations remain stable and insulated from API changes. Grosvenor Technology Limited is a division of Newmark Security PLC. info@grosvenortechnology

Grosvenor Technology Questions

The Grosvenor Technology annual revenue was $15.1 million in 2026.

Colin Leatherbarrow is the Managing Director of Grosvenor Technology and President of GT Clocks of Grosvenor Technology.

42 people are employed at Grosvenor Technology.

The NAICS codes for Grosvenor Technology are [541512, 5415, 54151, 541, 54].

The SIC codes for Grosvenor Technology are [73, 737].

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