I'm happy to share files that have come from a FOI request, as I know they have been suitably redacted by LU.
With that in mind...
Here are the shift patterns for numerous stations.
If I extract an example of King's Cross (attached), and you go to page 4 you will see the roster for CSA2.
View attachment 154354
It looks complex if you're not used to shift work, but it's fairly simple to understand. You will be allocated a roster line, but if you imagine you start at Week 1, that is Sunday/ Monday rest days and then 'Dead Lates'.
You then simply drop down to Week 2, and find that you'll be doing 'Lates' (finishing around 2200hrs), with split rest days which facilitates a weekend off (end of Week 2/beginning of Week 3).
Week 3 looks a bit tiring tbh, 'Lates', 'Middles' and 'Earlies' all in a single week! And so on. This roster allows you to plan your life around it as it rarely changes.
Cover weeks have been covered by another post.
Lastly, and only for extra info, the Schematic at KX gives a better understanding of the tasks each grade should be doing and where they'll be working at any given time. You can have a look, but it's not something worth going into here I don't think. (The quality will be much better on the actual pdf from the FOI)
View attachment 154357