Contacted Linsay Ogilvie @ Cube Housing today about the email from Glasgow District Council about the Adopted Roads in Broomhill.
According to their map None of the Cube Properties have adopted access roads.

Linsay is going to contact Stuart McKay from the GDC and the Cube Lawyers to try and find a solution to the problem.

I am also going to contact MR McKay and also the local councillor  Kenny McLean and inform him of the latest developments