I think up to the early 60s the public thought of platform staff as "porters" regardless of job title or duties. Places like Amersham would have had a genuine role for a porter at one time with mail, parcels and newspapers but I suspect that it would have remained as an anacronstic job title after those roles became redundant.Depends on what the job description for a 'porter' would have been. Perhaps today's station staff perform the tasks that porters would have done, and its only the job title which has changed
Bit like today the public tend to refer to any member of railway staff as a 'guard'I think up to the early 60s the public thought of platform staff as "porters" regardless of job title or duties. Places like Amersham would have had a genuine role for a porter at one time with mail, parcels and newspapers but I suspect that it would have remained as an anacronstic job title after those roles became redundant.