Harrier sp. near Blyth

A quick rush out of the house provided some brief views of this ringtail harrier over some fields east of the A192 just south of Laverock. The bird flew north, appeared to land in a field but them disappeared. We only saw the bird through binoculars but still it didn't 'feel' like a Hen Harrier with it appearing quite small and slim, and quite warm underneath. I managed a few record shots which might help with the ID. I have not edited the colours at all. Any comments very welcome...