It's a long, long while since I had any direct involvement with SPAD/SPAR incidents but, having read the entries here, I would just make the following points.
Signallers are employed by Networkrail. Drivers are employed by TOC's/FOC's.
If a Signaller were to agree that a driver could continue then, legally, they would be accepting on behalf of NR any consequences that might arise from that decision. I seriously doubt that NR would want a signaller to do that for them on their behalf, they would want that passed up the chain to somebody more senior.
Similarly I doubt the TOC/FOC would want their driver to continue without assuring themselves that they felt they were fit to do so. By talking with them and agreeing that they can continue then they have accepted all legal responsibility for whatever happens next. I'm sure that NR would want that rather than they took responsibility.
Irrespective of the train service both party's will want to protect their legal situation and limit their exposure to the risks of litigation involved.
Signallers are employed by Networkrail. Drivers are employed by TOC's/FOC's.
If a Signaller were to agree that a driver could continue then, legally, they would be accepting on behalf of NR any consequences that might arise from that decision. I seriously doubt that NR would want a signaller to do that for them on their behalf, they would want that passed up the chain to somebody more senior.
Similarly I doubt the TOC/FOC would want their driver to continue without assuring themselves that they felt they were fit to do so. By talking with them and agreeing that they can continue then they have accepted all legal responsibility for whatever happens next. I'm sure that NR would want that rather than they took responsibility.
Irrespective of the train service both party's will want to protect their legal situation and limit their exposure to the risks of litigation involved.