"Do you remember?" ask Earth, Wind and Fire in their classic hit September. For anyone who was working in the City on the morning of Monday 15 September 2008, the answer is definitely yes.

At 7.54am – six minutes before the London market opened – Lehman Brothers International Europe (LBIE) and three other Lehman companies went into administration. The largest bankruptcy filing in history would precipitate the global financial crisis. For the lawyers involved, they do not just remember, the minutiae of events leading up to that moment are seared into their minds.