 Armitage believes that when it is Lucas 's turn to leave the series , he would " leave in style , " and has no preference how he would exit , whether " sending Lucas to Manchester or severing his head , " he believes the producers would owe him a " brilliant exit . " In an interview with Lorraine Kelly on GMTV on May 2010 , Armitage revealed that in the ninth series , " [ Lucas ] is not who you thought he was . He 's not who I thought he was . " He admitted to being surprised at the development while reading the script . With the series theme being " deception " , Armitage felt that playing another side of Lucas was " interesting , " " quite exciting to play " and like " working in reverse because we 've already established his background and then we 've had to go and establish a much deeper background . " Writers Jonathan Brackley and Sam Vincent ( both head writers of the ninth series , having written five of the episodes ) made the decision about Lucas ' story @-@ arc in the series during the initial meetings with the producers . Throughout the process of developing Lucas ' arc , they worked through " a <unk> different versions . " For example , in the series finale , they considered that Lucas would release the Albany weapon on the Grid . Both writers admitted that they were " not @-@ half " concerned with possible negative reactions from fans of both Armitage and the character . In September 2011 , co @-@ star Peter Firth confirmed Lucas was killed off in the ninth series finale . He stated that the character " was always going to die . " At some point the producers considered having Harry shoot him at the top of the building where he would fall to his death . However , this changed to have Lucas just jumping off the building instead . 
