Tim is the Chair Professor in Wireless Communication at the University of Sheffield and a Fellow of the Royal Academy of Engineering (FREng).

In the field of wireless communications, Tim has made significant contributions to waveform and energy-efficiency design for radio access networks (RANs) and translated significant research into industry through standards, products, and practices.
His research is focused on wireless communications systems, specialising in radio systems engineering, physical layer signal processing, and energy-efficient (EE) wireless networking.

As Co-Founder and CTO of Supergold Communication Limited, he accomplished strategic breakthroughs in determining the IEEE802.11g Wi-Fi standard. Tim has developed standardised practices for measuring EE in RANs and produced software-tools for modelling RAN performance.

Tim has led 27 major research projects with a total research spend of approximately £29M. He led the UK Research Strategy Community Organisation in Communications, Mobile Computing and Networking within the Engineering and Physical Sciences Research Council portfolio (CommNet II, EP/N007824/1) and currently is the director of the UKRI National 6G Radio Systems Facility (EP/X030016/1).