Welcome to Talk Morgan and thank you for taking the trouble to report this.
I don't think there is cause for concern. That video has been around for a while, it looks like "Dark Explore UK" has recently uploaded it to Facebook in the hope of making some money.
There were discussions on Talk Morgan last year:
Found on youtube. It was noted back then that the house had since been secured.
Hopefully, someone here may have a more recent update?
