Yes it does have a separate thread:
https://www.flyertalk.com/forum/brit...on-thread.html

and there is lots to ponder there. Personally, and assuming CW, if wanting to get some sleep, I would avoid the smaller rear sub-cabin, but that's a good option for the day flights. Unless you take the middle pair then you are going to be cut off from each other, that's how privacy works in CS. At which point you are looking for window seats mid main cabin.