They are standard 4x4 timber posts not concrete. Also the fence is entire length at the back so there is no distinct corner which is less noticeable.
Ok hadn't thought of adding battens to the fence panel on sides. That might work out cheaper and less work. Will definitely consider this. Good...
I am going to replace fencing in the back garden and after careful measuring the total length of fence to be installed comes to 19.80 meters. I have worked out the materials required and it seems like I would need an extra fence panel, post and gravel board etc just for the sake of last section...