I was scheduled for PM install, but got a phone call mid morning asking if he could come early, which was fine by me.
We run the coax in exactly where I wanted it, although there is some excess internally, only problem with coax is it's not very flexible and you mustn't bend it too tightly. I didn't let him fix anything to the wall internally, I wanted to keep it as tidy as possible, so for him it was a nice quick job. Apart from what's seen in the attached photo's there is no other coax visible, I have trunking that runs around the room for all the other cables, so the coax is in this, then goes through a plastic pipe (actually 15mm plastic plumbing pipe) I installed years ago, which exits near the external box.
Picture 1 shows a 15dB wideband attenuator attached to the Hub 3, apparently used to reduce the power level, not a problem in my situation but these do stick out quite a bit, and then you have stiff coax.
Picture 2 shows the power injector.
Picture 3 shows the case that the power injector is mounted in screwed to the wall. Top left cable goes to the hub, bottom left is power in via coax from the plug in transformer, the coax feed in can't be seen but it is basically top right.
PS. Glad I haven't got Virgin TV, I hate the thought of having to put further coax around the house.