Thanks for the views, cool comments and general response - very positive and very much appreciated!
In answer to some questions:
The focal length varies from 500mm to 700mm (with the 1.4ex attached). Camera body is 5DIII.
The burner shots of the Eagles was taken down the lane from the viewing car park and past the old farm building. This can be done by taking the public path which arch's around the farm building until you meet the base perimeter again. At this point make a left along the grass. As I stood by the fence there was a donkey paddock to my left. The brick wall that was mentioned above was behind me. I focussed through the fence without too many problems so no step ladder required. Its best at this location either first or last thing in the day in my opinion.
Happy shooting

Cheers,
Chris