Vogel assisted Kara in her plan to destroy Davros so she could control the food supply for the whole galaxy. She duped the Knight Orcini into trying to kill Davros but this plan failed. Before it failed, however, Davros sent two of his new Imperial Daleks to bring Kara and Vogel to him.
In the middle of a toast, the Daleks entered. Vogel refused to be taken to Davros and the Daleks exterminated him. (TV: Revelation of the Daleks)