After joining Catapult as the first vice president of engineering, Mr Stewart managed the worldwide engineering organisation from 1992 through 2003. He has been the chief technology officer from 2003 to present.

Mr Stewart said: As I look forward to my future, I would like to thank everyone at Catapult who has made the experience of growing this company so rewarding. Catapult’s business has been built on protocol technology evolution in the telecommunications industry and the past 15 years have been an especially active period. It has been a genuine pleasure to work with our customers in support of their projects.