We have only had a Sky Dish Antenna on the side of our home. I was looking for an Antenna that would work but be small an possibly not visible.
I took a risk and ordered one of these: http://www.freeviewshop.co.nz/active-flat-panel-aerial-freeview-p-77.html
It is VERY small and I am able to receive all freeview channels with a 100% signal in St. Heliers, Auckland. I do not have line of sight to any of the transmitters.
Hope this is of use to others.
Best,
-Philip