Hi,
Thanks for the photos
Might skip breakfast and go to the arrivals lounge
( but will probably take one for the team!

)
I'm on this flight in early December so my plan is probably
Late evening meal at the Conrad EL
check out about 2245
get to the airport around 2330
snack in the lounge ( hopefully the BA lounge will reopen before then)
Change into my BA F sleep suit after takeoff
Skip the first meal.
Regards
TBS