Please post a GSV link to the exact location, please.
However, on the face of it, from your video, you are parked in a marked bay, albeit the markings are not well maintained, but are mostly visible. If you parked in a marked bay you have a duty as a motorist to go and look for the sign for the bay, and your video shows there is one. Not a good start for a winning appeal at London Tribunals methinks, but see what the others say.