Rubbing rear brake

[P_biggy]

I have an awful grinding noise on the rear near side brakes. It seems to happen when I apply the brakes and then release them especially when driving slowly. The rubbing noise then starts while I am traveling slowly and then disappears at speed. It is something around the brakes and I was wondering if they are not releasing properly once applied.

Any ideas? Many thanks.

 

[television]

Two things here. One that that the backplate is not bent and rubbing on the disc, but more likely to be a broken spring within the hub on the parking brake