I saw this Harrier a few years ago.
https://www.shutterstock.com/video/clip-3738048065-harrier-vtol-aircraft-running-on-tarmac
It was originally HD but I was able to remaster to 4K.
From what I remember the announcer said, it was the only privately owned one. This was 2014.
From Google AI
Yes, technically you can legally own a Harrier jump jet as a civilian, but it is extremely difficult to do so and requires extensive approvals due to its military origin, complex maintenance needs, and the need for a highly qualified pilot to fly it; the only known privately owned and flown Harrier belongs to a former military test pilot, Art Nalls, who has a specially modified Sea Harrie