Thanks for clearing that up everyone.
Unfortunately it has sprouted more questions
So how fast could the mighty fin go at altitude? with or without pylons, 'clean' ?
The press say 1700 mph but obviously this is not right, not that I trust them, they had a caption for a picture of a GR4 and labelled the wing tanks as anti-runway weapons!
And is the ferry range of 2,420 miles correct then..?