One of several heard within the gorse bushes on the slopes above the coastal path, between Ogmore and Southerndown, S Wales
No interactions present.
I bet you did see a Stonechat, but I think the bird which popped up when the camera was ready was a Robin!
My Flickr photos...
After "expanding the picture further, I agree that it is a Robin and not a Stonechat. Title changed and "agreed"
Lat/Lng: 51.4661, -3.6412
OS grid ref: SS860754