My hero was JS. When I were a lad, we went round Silverstone in similar times, only his time was on the GP circuit and mine was on the club one 8)
On one occasion I did a practice day at Silverstone (before the days of track days), I was in my 850 Mini. As I drove into the paddock, the marshal warned me 'watch your mirrors as there's some fast company here today' what he meant was, the Tyrell F1 team were there, complete with Ken Tyrell and Francois Cevert (who appears at the end of that video with JS). There was no protocols, you just went on track as you wanted. So there I was flat out, in my Mini with the current Tyrell F1 car and driver going past like you wouldn't believe. :-D :-D
Those days, you could get into Silverstone for the GP practice days for