Hello,
I notice your location is Glasgow, I assume that's the depot you've applied for?
I'm a new CSA at Glasgow, so far my experience with the company has been good. Training started with a two week course in Crewe and was followed by a few weeks of shadowing experienced CSAs before going out on my own.
The job itself involves working in either the onboard shop or the first class carriages. When working in the shop you're responsible for setting up the shop for departure and also maintaining stock levels through your journey by placing orders when needed. You're also expected to do announcements throughout the journey letting passengers know when the shop is opening/closing and promoting meal deals etc.
In first class during the week, you work alongside a service manager and chef to provide an at seat service from the onboard kitchen. You're also required to greet passengers who're boarding first class at each station on the route. During the week there are either 2 or 3 carriages of first class depending on which shift you're on and of course passenger numbers vary train to train.
If you're working first class at the weekend you work alone, however, there is only one coach of first class, coach K, which has a maximum capacity of 18 passengers and is rarely that busy at the weekend. As there is no chef at the weekend, you're required to prepare some meals using the oven/microwave. The weekend menu is reduced so you're not doing anything challenging and there are clear guidelines for you to refer to so it's not difficult at all.
Regarding shifts, it depends what contract you're on, there are different rosters based on your contracted hours. I'm on the 41hr roster. All of the rosters are rolling rosters, meaning that each week of the roster is pre-set, you start at a specific point and move down one position each week and eventually end up back at your starting point (I hope that makes sense) So that means you can see what you're working way in advance.
You do different journeys on each shift. For example, you may do Glasgow to London and back one day, which would be around 11.5hrs and the following day may be Glasgow to Preston and back, which might be around 6.5hrs, so shift lengths vary. The earliest possible start is 0358 and the latest finish is 0023, so you working anywhere between those times.
In terms of days off, or rest days (RD) as the railway calls them, they vary week to week. The week starts on a Sunday. This week I'm off today (Sunday), I'm working Mon to Wed, off on Thursday, working Friday and off Saturday. So sometimes the days off are split up across the week but sometimes they're together.
As I said, I'm new so have limited experience with the company but I hope that answers some questions. If you have any more, I'm happy to help!