directors, Valerie Mellon, Lyndon Bruce, Michael Duffy, Declan Healy ; executive producer, Jacqueline Smith ; series producer, Catherine Abbott ; BBC Studios, the Science Unit, Scotland
directors, Andrew Thompson, Michael Duffy, Denise Glass ; executive producer, Jacqueline Smith ; series producer, Dominic Gallagher ; BBC Studios, the Science Unit, Scotland
directors, Michael Duffy, Declan Healy, Valerie Mellon ; executive producer, Jacqueline Smith ; series producer, Catherine Abbott ; BBC Studios, the Science Unit, Scotland