Sounds like the picture setting in the Freeview need changing to 16x9. they look like they are set to picture shape 4x3 instead. Go to the box settings and change,
I have a new TV UE32D6530 which has been working perfectly. The picture is set to 16:9. I switched off last night and changed nothing but today when I switched on the picture has changed. I now get Black borders top and bottom of the screen and the images are too wide. Setting to 4:3 gives a true shape image.
This happens when using built in Freeview but not when using Freesat via a set top box. I would be grateful for your advice.