Claim: Catherine Tregenna co-wrote Cowbois ac Injans.

Catherine Tregenna is a Welsh playwright , television scriptwriter and actress .   She wrote the play Art and Guff , co-wrote the series Cowbois ac Injans and four episodes of the BBC 's science fiction drama Torchwood : `` Out of Time '' , `` Captain Jack Harkness '' , `` Meat '' and `` Adam '' . As well as co-writing Meat , she also created the meat props shown in the episode . `` Captain Jack Harkness '' was nominated for the 2008 Hugo Award for Best Dramatic Presentation , Short Form .   She has also written episodes for EastEnders , Casualty , and for the first four series of ITV1 crime drama Law & Order : UK , which began transmitting in February 2009 .   She played the character Kirsty McGurk , for several years , in Pobol Y Cwm and a doctor in Satellite City .   In November 2014 , it was confirmed that she would be writing an episode for the ninth series of Doctor Who , later confirmed to be titled `` The Woman Who Lived '' .