Twenty years ago today, the sleepy Herefordshire town of Potters Bar was the home to a bloody rail tragedy that shocked the nation.
The horrors of the day caused a major upheaval in the way British railways operate, and led to millions of pounds worth of fines being handed out.
Legal proceedings were still ongoing eight years after the fatal derailment took place.
The disaster was the fourth Potters Bar train crash in the town’s history - there was one in 1898, another in 1899 and a third in 1946.
The 1899 crash killed the Earl of Stratford.
What happened in the Potters Bar train crash?
On May 10 2002, a West Anglia Great Northern train service headed for Norfolk departed from Kings Cross station.
Travelling at 97mph, the train passed over a set of points that allow trains to change from one set of tracks onto another.
As the train went over them, the points moved to cause part of the third carriage and all of the fourth to derail.
The derailment caused carriage four to detach from the others and move onto the next line along where it flipped into the air.
The carriage hurled into the station, sending debris flying into a nearby road, before sliding along the platform and coming to a stop at a 45-degree angle underneath the roof of the station.
Did anyone die in the 2002 Potters Bar train crash?
The 2002 Potters Bar train crash tragically claimed seven lives. Six of the people who died were travelling on the fourth coach but a final person, Agnes Quinlivan, was killed by the debris flying onto the road.
The seven victims were: Austen Kark, 75; Emma Knights, 29; Chia-hsin Lin, 29; Prince Alexander Ogunwusi, 42; Agnes Quinlivan, 80 (killed by falling masonry); Jonael Schickler, 25, and Chia-Ching Wu, 30
An investigation found that the points that had moved and caused the derailment had been poorly maintained.
The Office of Rail Regulation announced in 2010 that Jarvis plc - the private company responsible for the maintenance of the tracks - and Network Rail would be charged under the Health and Safety at Work Act.
In 2003, a year after the crash, Network Rail announced all track maintenance would be done by its own workers, rather than using private contractors.
Jarvis paid £3million in financial provisions in 2004 and Network Rail paid the same amount in fines in 2011.
Among the victims was Alexander Ogunwusi, a Nigerian prince and recently qualified lawyer who was was travelling to meet a client by train in order to relax.
His wife told the jury in 2010: "I miss him daily. He took care of the kids. We all miss him. He was a good husband.
"There's no word I can use to describe the loss of Alex in our house."
