(14 Jun 2014, 5:09 pm)Jimmi wrote Go North East briefly had Service X11 a few years back which ran from Newcastle - Hartlepool with two journeys in each direction on Saturdays only.
http://durham.pindarcreative.co.uk/tt/X11_GNE.pdf
I was told by the MD at GNE at the time, that the X11 was put on due to the reliability issue at the time between Newcastle and Peterlee on Saturdays and their decided to start the X11 at Hartlepool to see if anybody uses it.