Qualified in what ???? it defo isn't plumbing (Water Regs or unvented), heating, electrical, lagging, even the woodworking skills aren't great it looks like they even ripped up the bit of flooring right next to the cylinder to use as the back board, you can see the screw holes along the edge of the T&G.Yes the ufh is off the unvented Yes the installer was qualified. No he didn't have a clue. Yes it's hilarious and I can't help but laugh.
Some have absolutely no shame or then again perhaps they thought it was a good job.