Hi, the freeview channels that are displayed come from your TV aerial. I can only assume that your second TV uses its own aerial, rather than being plugged into the wall like your main TV, which is why you get a different news region. The only way to change the channels would be to physically move your TV aerial so that it is pointing towards the main transmitter.

After switchover the strength of TV signals was altered, so you seem to be getting a stronger signal from the other region at the moment.