I was somewhat confused as to why someone with what was probably a secure job as a Police Constable in 1891 should end up as a Porter in 1901.
As I said before the life was hard, 10hr shifts 7 days a week ( it wasn't until 1914 that Constables in Scotland got a statutory right to 1 day off in 7)
Wages - the average wage was considerably less than could be obtained in most industries
The 1890 Act although it introduced 25 yr service pensions and ill health retirals actually reduced the benefits on offer
Rigid army style discipline - many of the senior officers (above Inspector) were recruited directly as they retired from the Army
The job wasn't as secure as modern eyes may consider it or as attractive in comparison to many other jobs.