Scheckter, young and still finding his feet in Formula 1, lost control of his McLaren M23 exiting Woodcote corner as the pack funnelled through at the end of lap one. The car speared across the track directly into the path of the cars behind. What followed was carnage: nine cars were eliminated in seconds as drivers with nowhere to go ploughed into the wreckage and into each other. Debris scattered across the full width of the circuit.
Given the scale of the accident — a near-full-width blockage with cars still arriving at racing speed — the race was immediately stopped, one of the earliest high-profile uses of a red flag to halt a grand prix outright rather than let it play out under yellow flags. Remarkably, despite the violence of the collision and the number of cars involved, nobody was seriously hurt — a mixture of luck and the inherent safety margins of Silverstone's wide, sweeping layout at that corner.
With the track cleared and the wrecked cars removed, the race was restarted from the original grid, minus the cars that couldn't continue. Peter Revson, Scheckter's own McLaren teammate, went on to win the restarted race — his first grand prix victory, in a race his teammate had just helped bring to a premature halt.