Question Author
I think I have sussed out the problem. We have 2 televisions in the house, one is a flat screen digital and the other is an older type of analogue TV, but I have connected to this a DVD recorder, which gives me my digital programmes.
I have discovered that the flat screen digital set shows BBC1 North (Yorkshire) while the other one shows BBC1 North (North East and Cumbria) if viewed on the digital channels, but shows BBC1 North (Yorkshire) if viewed on the analogue channels.
Therefore, if I set it to record, it picks up the North East and Cumbria programmes, whereas if I watch it on analogue, it picks up the Yorkshire programmes.
There is no difference with the two programmes except for local news items.
In case you are wondering why I watch it on analogue instead of digital, it is because I have a loop system installed so that I can listen through my hearing aids, if I watch programmes on the digital channels the sound is out of synch, by 4 or 5 seconds, whereas if I watch on analogue the sound is OK. I don't know what I will do when they turn the analogue signal off in this area, but that is a problem I will face when it happens.