About 10 years ago when my house was let the neighbours phone line was strung across my property through my gutters. I am planning substantial renovations and this will need to change. How do I get their line off my house.
You need to contact openreach assuming the line belongs to openreach. https://www.openreach.com/help-and-support
This has nothing to do with BT RETAIL and there is no link from here to openreach