Sighting in Luton, United Kingdom

Sighting in Luton, United Kingdom
Saw this while in Luton.

Time: 16th March 2025 (Sunday, 8:23 pm)  
Location: Luton (United Kingdom)

Though there is an airport in Luton, this was moving at a much higher speed and it was way higher and physically different from a conventional jet or flight.

It went forward and disappeared from my sight. The video was recorded using an iPhone 14. But here is the strangest part: I saw the same (maybe?) object  a day earlier and was confused by the sighting. I tried to show it to my friend but had no luck. However, I was able to capture and share the moment the next day at almost the same time (during our smoke break). Just wanted to share this and get it off my chest and out of my gallery.

P.S : Don't mind the language, had to upload it raw somehow.

Screenshots from the video:  
[https://imgur.com/a/nExW19L](https://imgur.com/a/nExW19L)

https://reddit.com/link/1jeayk1/video/8hr540jpjhpe1/player