Dr Shibley Rahman was born in Glasgow and trained in medicine at Cambridge University, where he also completed his Ph.D. in the neurocognition of frontotemporal dementia. He also trained in international law and business management from London to postgraduate level. He is currently employed as special advisor in disability at the NHS Practitioner Health. He has research interests in dementia, delirium and frailty, and is a member of the special interest groups of the European Geriatric Medical Society in dementia and delirium. Other publications include 'Living well with dementia', which won BMJ best of the book award in 2015. Outside of formal work he is a family carer, and interested in cooking. He posts occasionally on Twitter (@dr_shibley).

Dr Henry Woodford was born in York but completed his training in medicine at King's College London. He is currently employed as a consultant geriatrician at Northumbria Healthcare in the northeast of England. He has a particular interest in medicines optimisation for older people and is chair of the relevant British Geriatrics Society special interest group. Other publications include the textbook 'Essential Geriatrics'. Outside of work, he tries to keep fit through circuit training, running and indoor bouldering. He posts occasionally on Twitter, including the cartoon strip 'the Wholly Frail' (@woodford_henry).