Glossary

HSL Mobile

Founded as Hay Systems Ltd (otherwise known as HSL Mobile) in 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 CEO/CTO and managing director of the company for over 19 years. 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. Through these services, we enable businesses to communicate better with their staff and customers, and by doing so, increase their success.