Passionate Productions for BBC ; produced for NOVA by Holt Productions, LLC ; WGBH Boston ; produced and directed by Jemima Harrison and Sarah Holt ; writer for the BBC, Jemima Harrison ; executive producer for the BBC, Richard Klein ; senior executive producer, Paula S. Apsell
series created and written by Heidi Thomas ; written by Louise Ironside, Carolyn Bonnyman, Andrea Gibb, Debbie O'Malley, Lisa Holdsworth, Amy Roberts & Loren McLaughlan ; produced by Ann Tricklebank ; directed by Syd Macartney, Kate Saxon, David O'Neill, Christiana Ebohon, Kate Cheeseman ; Neal Street Productions for BBC and PBS
a BBC production with PBS ; executive producers, Helen Thomas and Jonathan Renouf ; series producer, Gideon Bradshaw ; produced and directed by Naomi Austin, Helen Sage, and Martin Johnson
produced for NOVA by BBC for WGBH Boston ; produced and directed by Guy Smith ; series producer (BBC), Zoe Heron ; managing director (NOVA), Alan Ritsko
a Crossing the Line and HHMI Tangled Bank Studios production for PBS ; in co-production with ZDF in cooperation with ARTE, BBC and RTÉ ; written & directed by Emer Reynolds ; produced by John Murray & Clare Stronge
a Playground Entertainment and Company Pictures production for BBC and Masterpiece in association with BBC Worldwide, Altus Media, and Prescience ; produced by Mark Pybus ; adapted for television by Peter Straughan ; directed by Peter Kosminsky