When a Kings Cross train derailed on its way out of the station, Jarvis were initially adamant that their maintenance regime was not to blame. A short investigation by Network Rail later however, together with the peace of mind that comes from knowing no lives were lost this time, allowed them to admit that, umm OK, it was squarely their fault the points hadn’t been properly restored to operational order.
But at Potters Bar, in which people lost their lives when a carriage derailed and slid across the platform, Jarvis insisted that it was not their fault the bolts were missing from the point blades. No, that was “sabotage” (after all, saboteurs could theoretically strike at Potters Bar and not be witnessed, which is not the case at the busy throat of a major terminal). And I think we can now see just how likely that explanation is.