EDIT: I see how you work with the signallers to provide information. At the end of the day though, the decision to not call is still not down to you though
I see that point. However; the Driver's recommendation becomes a large factor. I have flat out refused when I've been overcrowded so the decision was entirely mine. The same with diversions. I have made the decision sometimes and even once the Signaler said "stop where you want"
Anything I consider unsafe I am well within my rights to refuse. Its actively encouraged in some circumstances. Whats the worst that can happen.
As I said I have also refused a not to stop. Passengers getting sudden diversions has a major impact. Sometimes you have to speak up. I got cancelled in service a few weeks back coming out of Blackfriars. No-one told me and the announcements to the passengers were mixed. I got to Elephant and confusion ensued. Many people want Denmark Hill and a passenger asked me where I was going. I told him that I would absolutely stop at Denmark Hill. It is an interchange station and it is used for the hospital.
Sometimes being asked to run fast you pick up time and can run through stations on time ! That's a phone call to the Signaler
The important this is to communicate whats happening on the ground. A GTR Driver who was passing on a train took the decision to keep a train in service as the relieving Driver was not available. It caused absolute chaos. There was 3 of us available to take the train and Blackfriars tried desperately to keep the unit in service, the Signaler agreed to run it on the booked route and pulled the road. They were announcing that due to lack of Driver the service was cancelled. Station staff, Signaler, Drivers, Control, were basically all contradicting each other. 3 of us were available, and willing, but the decision was still eventually taken to cape it. Disgusting day tbh.
I know there is a lot going on behind the scenes and I'm not trying to be belligerent or think I know better but control are blind to what is happening on the platform. Being professional and working together with the Signaler and control makes for a better passenger experience.
Comments in the crew room about £"$"£%£ Control, Barsteward Signaler ! and numerous expletives born out of frustration can easily be resolved by a simple phone call.