Thanks for the answer.
I have run auto tuning which says it then stores the channels but with no success. I cannot find an auto scan button anywhere. We have another tv set in another room which is run by the same cable and get freeview on that. It now seems we can get the sky channels on the one we have trouble on but no freeview.
Yes. This is a new tv and we are trying to set it up. Should I get an engineer out in case there is a fault with the antenna?