Surely the Spitfire was only cleared for a Run and Break therefore the runway was not required to be clear? It doesn’t matter where the Chinook was on the runway, the Spitfire only needed clearance when he called Finals.
The Spitfire pilot flew below his legal height, he was not routinely cleared to waz about at 30ft. He was only cleared low as part of a display and this was a routine arrival, not a display therefore he was not authorised to this height. It seems to me that the Chinook crew displayed appropriate airmanship (and sensible reactions and capacity by noticing the approaching Spitfire). It seems for the transcript that the Spitfire pilot clearly wazzed the place, didn’t file an airprox and was arrogant and belligerent in his response. I know what conclusions I draw from that report!