 He went to school in the Athens College, received a degree in law from the National and Kapodistrian University of Athens, a Master of Laws in Maritime and Insurance Law from the University College London and in Criminology from the London School of Economics.A practising lawyer, Dendias has been active in New Democracy since 1978, first as a member of ND's student wing, DAP-NDFK and later as a party functionary in the Youth Organisation of New Democracy.He was elected as an MP for Corfu in the Greek parliament in the 2004, 2007, 2009 and June 2012 elections.