By Joseph Gamp A woman has died following a horror crash on the M25 between a van and three cars – just moments after a police chase. The pile up took place after cops had stopped pursuing the van just moments before the crash at 4am on Sunday morning. The “serious road collision” has left the M25 closed between junctions 22 and 25. And now, police have been referred to an independent watchdog following the fatal collision. Images from the scene show vehicle wreckage scattered across all four lanes of the London orbital motorway.. In a statement, Hertfordshire police said: “The M25 remains clo…