Hi Steve - did you mean the 16:20 from Rose Hill? If so, it looks like there will be a train at 16:14 from Rose Hill from Monday when the new timetable comes in.
https://traintimes.org.uk/rose+hill/romiley/15:15/2022-05-16But what Northern Rail giveth, Northern Rail taketh-away, for they're axing several services running through Marple. Marple's been running mostly a half hour service recently, but from Monday some of the afternoon services are being withdrawn putting it down to hourly. Rose Hill's still also going to be a long way off its pre-Covid half hourly service. It really is a mess and doesn't encourage anyone to use the railways. I work from home mostly, but the state of the trains is such that next time I am going to the office, I'm looking at cycling instead. Ironically Google Maps tells me it will be five minutes faster by bike than the train!
(To provide some good news - Northern are currently running mostly six car trains at weekend through Marple, which is a vast improvement in capacity.)
And I am sure I join many in saying those pedestrian crossings are long overdue! The canal's an awkward spot to cross due to visibility, and it's crazy that you can get off a train and spend five minutes waiting for a safe crossing.