Daniel Morgan The known masts we are ment to access is 1st priorty Bilsdale and second option Pontop Pike.
From Stockton-on-Tees the Pontop Pike and Bilsdale transmitters are in completely different directions, so which one you're receiving (if either) will depend on which way your aerial is pointing. Which one is it?
If you look at the programmes on your TV without using TVHeadend, what do you see? Do you see the same channels as on TVH or not?
If you see the same channels then your problem is not related to TVH and you need to sort it out with your aerial installer. If you see different channels then the setup of your TVH is wrong, and we can help you with that once we understand the actual situation.
Neither transmitter should be showing you local Liverpool news unless that is something ITV are actually doing for some reason. Where I live in East Anglia we sometimes get London local news when they are doing work on our local studios for example.