Jonathan Clark is a buildings archaeologist and architectural historian who has spent much of his career researching, recording and analysing medieval castles, houses and monasteries across the British Isles. He has been researching Lincoln Castle for over 20 years and is Lincoln Cathedral Archaeologist.
Justin Garner-Lahire is the managing director at FAS Heritage, an archaeological research practice founded in 1993. He has excavated extensively on medieval sites in England and Scotland, having led major excavations at Castle Sinclair Girnigoe, Lincoln Castle and Somerton Castle.
Cecily Spall is a senior archaeological researcher in FAS Heritage who has excavated, studied and published numerous medieval stratified sequences in Britain, famously at Portmahomack, Easter Ross where she was the leading co-director.
Nicola Toop studied the early medieval Irish Sea region for her PhD and is a long-term researcher at FAS Heritage involved in archaeological and documentary research at castles and monasteries, such as Lincoln Castle and Bolton Abbey.
