Ok, I have found the problem. It was my brakes. On the right brake disc, the inner disc on both edges there is bit of a lip. This has worn the same pattern on to the pad.

The problem has been rectified now, and I am now bedding the brakes in again to make sure it has gone away

Good news, glad you found the problem & top marks for reporting back there is nothing more annoying when members ask for help & don’t post back on the final outcome of the issue