Could we help?
Thinking about the original post.
Nav and me were coming back from the West Country, passing through the Oxford - Cambridge corridor at FL200. We were with London Mil who asked us if we could help a TR1 pilot who was suffering from a partial oxygen failure, felt unwell, and had asked for shepherding assistance back to Alconbury.
We asked for a steer to go and pick him up. London Mil replied 'In your 10 o'clock, range 15, and descending through FL660'. We said we would do our best!
We eventually picked him up at FL450, and took him back.