It would not be worth openreach building a new cabinet to provide a fibre connection to only potentially 30 customers. It would take years to get a return on the outlay. Have you tried BDUK Scotland
As final update on this Thread, I am confirming that I still have a solid 4.75 download, which is the best I have achieved since we came here. Thanks to all who helped get me there. The value of engineers on the case is in no doubt.
As an interesting side issue, many more people in our group are having similar problems to myself, and the outreach vans are now frequent visitors. No two engineers were the same, and they are all only aware of the fault reported to them. Does no one collate all the calls and indicate that there might be a common thread here???