Janet Peacock is a medical statistician with over 20 years experience of medical and healthcare research, and undergraduate and postgraduate teaching. She has conducted and collaborated in many published medical research studies, and gives advice to researchers at all the different stages of the research process. She has much experience in reviewing proposals and research articles, and has taught a range of trainee and career healthcare professionals, including medical students, doctors, physiotherapists, occupational therapists, and nurses. Through these experiences she has sought ways to promote sound methodology in conducting and reporting research findings by teaching, consultancy, and writing. For many years Janet worked at St George's University of London and left in 2004 to take up a chair at Brunel University. Sally Kerry has worked as a primary care statistician at St George's University of London for over 18 years. She has collaborated on many research projects, both in the UK and in Africa. She has taught methodology to general practitioners in the UK and abroad, and has worked for 6 years as statistical consultant to a local NHS trust.

She has particular experience in cluster randomised trials and has sought to help general practitioners and other researchers understand the statistical issues involved, through consulting, collaboration, and a series of BMJ articles. She has acted as statistical referee for local and national grant giving bodies, and is a member of a local research ethics committee.