The collapse of Lehman Brothers, the US investment banking giant once considered indestructible, was one of those “where were you” moments, like the fall of the Berlin Wall or the assassination of John F Kennedy.

I was not around when JFK was killed but I remember that September in 2008 when Lehman filed for bankruptcy well. Just a few months earlier I had taken a job at the Financial Times to launch a newswire for investment managers. The idea was to give industry figures the news they could not find elsewhere and charge them many thousands of pounds for the privilege.