[3] Hopper was awarded his PhD in 1978 for research into local area computer communications networks supervised by David Wheeler.

[10] Hopper's PhD, completed in 1977 was in the field of communications networks, and he worked with Maurice Wilkes on the creation of the Cambridge Ring and its successors.

In 1985, after leaving Acorn, Hopper co-founded Qudos, a company producing CAD software and doing chip prototyping.

[21] In 1997, Hopper co-founded Adaptive Broadband Ltd (ABL) to further develop the 'Wireless ATM' project started at ORL in the early 90s.

In 2002 Hopper was involved in the founding of Ubisense Ltd to further develop the location technologies and sentient computing concepts that grew out of the ORL Active Badge system.

Hopper became a director in 2003 and was chairman between 2006 and 2015 during which the company made its initial public offering (IPO) in June 2011.

From 2005 until 2009, Hopper was chairman of Adventiq, a joint venture between Adder and RealVNC, developing a VNC-based system-on-a-chip.

[24] Since 2019 he has been Chairman of lowRISC[25] Community Interest Company which develops industrial-strength open source hardware.

In 2005, he was appointed to the advisory board of the Institute of Electronics Communications and Information Technology at Queen's University Belfast.

In 2011 he was appointed a member of the advisory board of the School of Computer and Communication Sciences at the École Polytechnique Fédérale de Lausanne.

[41] Hopper married Alison Gail Smith, Professor of Plant Biochemistry at the University of Cambridge, in 1988.

[citation needed] He is a qualified pilot with over 6,000 hours logged, including a round the world flight, and his house near Cambridge has an airstrip from which he flies his six-seater Cessna light aircraft.

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