As I remember it the captain would go to met and meet the rest of the crew in the Ops wing planning room . At T O - 3 and announce which low level portion of the route we would be doing. This was the round U.K. “link route” which had designated entry points : ie today the weather is fit EP 23 (Bass rock) to 30 ( Humberside Area). The plotter would then put together a high level NAVEX letting down to the LL entry point at a given time which had then to be booked. The Nav Rad meanwhile delved into his bag for a couple of simulated targets on that portion of the route. Added to this may have been a detail on a bombing range where up to 4 real 28 lb practice bombs may have been dropped. Depending on the aircraft fit these could have been simulating conventional or nuclear weapons. Then back to the circuit for instrument and visual circuits. Night sorties were much the same with the added fun of pre computing the Astro shots!
Happy Christmas to one and all.
TL