Vote

http://www.radiotimes.com/news/2012-01-03/endeavour---should-it-get-a-full-series

http://www.radiotimes.com/news/2012-01-05/we-want-more-endeavour!---97-per-cent-of-radiotimescom-users-demand-a-full-series

Use the top one please to vote for more of Endeavour even if you haven't seen it yet, as every vote counts towards keeping John's memory alive.