As well as being a prominent voice for early career researchers and postgraduates, Cohen is a passionate campaigner for women in physics. In 1996 Cohen created a booklet, Voices from Women in Science, which led to a number of opportunities promoting diversity at Imperial College London. She sits on the Department of Physics Juno committee, which writes the Athena SWAN and Juno applications. Under her leadership, the department was awarded Juno Champion status and Athena SWAN Silver Awards. She is Imperial College 's Academic Ambassador for Women and chair of the Committee for Academic Women. In 2013 she was the inaugural winner of Imperial College London Julia Higgins medal.