Renny Leach is currently a board member of two biotechnology companies as well as a contract clinical research company. He is the medical research director for the children's medical research charity Sparks. Renny is a trustee of the Lord Snowdon Award scheme for disabled students and chairs the QVH Charitable Trust Advisory Committee. He lives in Forest Row.

Renny was previously Director of Clinical Research at the Institute of Child Health and Great Ormond Street Hospital for Children NHS Trust and has held senior positions within the UK Medical Research Council, the Horsham-based charity Action Medical Research and was CEO of a contract clinical research company.