Electrical engineer and photometry expert, Fellow and President of the Women's Engineering Society.
Attended Furzedown Primary School and Streatham Secondary School (both London County Council schools).
Studied at Newnham College, Cambridge to read for the Natural sciences Tripos, where she specialised in Physics.
She was elected a fellow of the Society of Women Engineers.
1945 Married John Norman Hardwich who at the time was working as an engineer in the High Voltage Research Laboratory Metropolitan-Vickers Electrical Co. He was an associate and also a keen supporter of the Women's Engineering Society, and he shared the burdens of running the home to allow Isabel to continue working at Metropolitan-Vickers.
Hardwich's archive is held at the Institution of Engineering and Technology. The Women's Engineering Society has awarded the Isabel Hardwich medal, named in her honour, since 1987. This is given to a member who has made an outstanding and sustained contribution to the Society over a number of years and gone above and beyond the call of duty.