Had email saying they're keep my details on file for six more months then I'll have to re-apply due to a 'change in the business needs' or words to that effect.
Anybody that applied for the original role I'd recommend applying for other jobs in the industry in the meantime - ticket snipping, booking office, platform.
They advertise quite often for these roles and it's a good way to get into the industry.
That's what I did while I was waiting for this shunter job and now have another job on the railway and will re-apply for the shunter role as and when it comes up.