I just looked and (as I vaguely remembered) Atlantic Telecom was the cable company for Aberdeen. They went belly up in 2001 and I believe their cable assets weren't bought and are still there, getting increasingly out of date, under the streets of the area. I get the impression they were more of a phone and internet provider than TV in their later years. Maybe someone from the area with a greater knowledge can chip in.
http://news.bbc.co.uk/1/hi/scotland/1738232.stm
https://www.telegraph.co.uk/finance/...-was-sunk.html