What is the regs on terminating unused cable or even cores of an SWA cable. I know sometimes we can’t remove the cable completely sometimes due to being impractical.
See paragraph 75 in HSR25. The duty holder must take all reasonable steps to ensure that disused equipment does not become inadvertently energised such that danger may arise. That requirement extends through the life of the installation so it would be difficult to comply without ensuring ends are appropriately arranged.