the next episode of season 3 will air january 5,2012
The vampire diaries will be on ITV2
January 21st
I don't know there is only repeats of Benidorm instead of vampire diaries 
Vampire Diaries doesn't air again in December 2010. The season will continue on January 27, 2011.
It has already aired
September 9, 2010
May 6th
September 23rd2010
Febuary 11 2011
27th January
12th december
September 9, 2010