Andrew joined BT in 1985 after a BA in Physics from Oxford University. He has helped design a wide range of optical network systems and technologies, including long haul subsea and terrestrial DWDM networks. He has been responsible for optical fibre and systems specifications. He currently leads BT’s optical research including optical access, high speed transmission and quantum communications. He has recently initiated BT’s quantum research, with applications in areas such as secure communications, timing and sensing. He regularly speaks at conferences, sits on several organising committees, including ECOC and was Technical Program Chair for OFC 2015 and General Chair for OFC 2017. He is TPC co-chair of ECOC 2023. He is Editor-in-Chief of the Journal of Optical Communications and Networking, He is Visiting Professor at Essex University, Fellow of the IEEE and a BT Distinguished Engineer.