Waiting for a skylight

For a month now I have been told by the skylight installer (Williams Skylights - Grant Williams) that he would come to install my skylight in the back room. Twice there has been some excuse. I got up early this morning to prepare the room with drop sheets to catch the bits of plaster from the ceiling cut-out, and put all my ironing mess on my bed.

And lo! He doesn't come today - he's sick, apparently (he sounded it on the phne too). So, another to weeks to wait. So annoying.