Was at work earlier, so I will elaborate, BT engineer turned up yesterday afternoon, my brother ran through his preferred options, OR engineer almost insisted on an external install, but after consulting the forum (presumably some private OR Engineers forum) agreed to install the CSP in the loft (which is fully boarded), and then use the 10mm nylon pipe to feed the fibre from the ONT which is under the stairs to the loft.
He completed the internal install yesterday, but was not happy with running the fibre from my brothers current pole to the house, right next to my brothers house is a small side access to two bungalows, only really wide enough for cars, or small vans, could probably just about get a lorry up there but unlikely. He said the drop wire had to be 5.9 meters high - his existing drop wire has been up for decades. So he said he needed to connect to the pole down the road, which was closer but would require a cherry picker, which wasn't available until this morning. He also had to get permission to connect to the other pole.
So this morning they turned up and ran in the new drop wire, and was all working by mid to late morning sometime.
My brothers happy with the install, well apart from the odd download speed, pictures attached.
Out of curiosity what ONT is that?