F D Hay – 1948-2022

Glossary

HSL Mobile

Founded as Hay Systems Ltd (otherwise known as HSL Mobile) in November 1999 by Mark Hay, this SMS aggregator provided service to customers in the UK and worldwide. The business focused on SMS aggregation and operated its own SMSC platforms and other SS7 infrastructure, obtaining interconnect with all UK MNOs and a number of MNOs worldwide.

Mark Hay was owner, CEO/CTO and Managing Director of the company for over 19 years. F D Hay was a director of the business from its founding until April 2018. The business was sold by Mark Hay in December 2018.

Since leaving HSL Mobile, Mark Hay has gone on to found the CPaaS provider Melrose Labs.

Melrose Labs: We deliver innovative services in cloud communications across mobile, fixed-line, satellite and internet. Our services increase the success of businesses and other organisations through better communication with their staff and customers.