Yes, you’re spot-on! It was the last weekend in July: 25th July 2008.
We were sitting in the car, with the windows open, enjoying the calm of the sea, when suddenly we heard an ear-piercing noise followed by the beautiful spectacle in the video. The aircraft came and went out of view so incredibly fast, that I guess - going by the immense booming noise - that it was breaking the sound barrier.
Thank you, Don, that’s brilliant!
I’ve now edited the title of the video on my hard drive to say that the aircraft is a Typhoon (delta) probably from RAF Leeming.