Thanks everyone, an interesting post. For my part I can only say that it is the same route my instructor sent me on for my qualifying x-country 3-4 years ago. It is outside (west) of the flute and the incident occured when the jetsteam was outbound, not within the approach flute. My track was 3 nm north of the flute marked on the chart. Bearing in mind the procedure IFR traffic extends north of Bedford/Poddington disused, outside the flute marked on the CAA chart the uninitiated would not necessarily be aware of the increased risk of traffic. Just keep a lookout and fly safe.
Bob out
