Well it's hard to tell what's going on there, but it looks like the home owner asked them not to park outside the house because they were having their driveway done, but the window cleaner did anyway. WAS HE PARKED OVER THE DRIVE? Not clear, and that's the crucial point.
So she has parked her blue car tight up against the van to block him in.
If he has indeed parked over the drive, then that's illegal and he is in the wrong. If it's just a road, and he ignored her request to park elsewhere, then the householder is in the wrong.
So it looks like the window cleaner bloke got quite upset and decided to shout (and possible swear? not clear from the video but the comments would suggest it) at her from the street, which she filmed, put on youtube and facebook, naming the company, the employee and the directors with their names and addresses.
It seems the directors have now been harassed at thier homes and had threatening and abusive messages for them as a result.
So my take is this:
1) window cleaner should not have parked in front of the drive, if he did.
2) householder should not have blocked him in, but instead called the police.
3) window cleaner should not have shouted, swore or be abusive to her, though I don't think that's against the law.
4) householder may get sued for that new online harassment charge, as the result of them posting this video has ed to abuse, which could cost them thousands.
Numpties all round.