Two men have been found guilty of the manslaughter of 39 people who suffocated as they were smuggled into Britain in a lorry trailer.
The Vietnamese migrants, aged between 15 and 44, were found dead in the back of a trailer in Essex on 23 October last year.
They had suffocated in sweltering temperatures as the airtight container was shipped from Zeebrugge to Purfleet.
Ringleader Gheorghe Nica, 43, from Basildon, Essex, and lorry driver Eamonn Harrison, 24, from Co Down, had denied 39 counts of manslaughter.
The jury at the Old Bailey in London, which deliberated for nearly 23 hours, also convicted them of their part in a wider people-smuggling operation with Christopher Kennedy, 24, from Co Armagh and Valentin Calota, 38, from Birmingham.
Harrison, Kennedy and Calota had pleaded not guilty to being part of a people-smuggling conspiracy.
Nica has admitted a limited role but denied involvement in the fatal run.
Ten teenagers, including two 15-year-old boys, were among those found dead in the lorry in the early hours of 23 October last year.
The verdicts bring the total number of people convicted in Britain to eight, including haulier boss Ronan Hughes, 41, of Armagh, and 26-year-old lorry driver Maurice Robinson, of Craigavon, who admitted manslaughter.
Prosecutors are considering charges against a further three people.
The maximum sentence for people-smuggling is 14 years in prison with manslaughter carrying a possible life sentence.
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Detective Chief Inspector Daniel Stoten, of Essex Police, said the gang were "greedy" but "complacent".
He said: "You would not transport animals in that way but they were quite happy to do that and put them at significant risk."
Since the tragedy, Essex Police had been at the forefront of cracking down on organised immigration crime, Mr Stoten said.
Kelly Matthews, from the Crown Prosecution Service, said: "Thirty-nine vulnerable people desperate for a new life put their trust in an unscrupulous network of people smugglers.
"Nothing can bring back the lives lost on that day or the loss caused by the horrible, unlawful and dangerous actions of these defendants.
"But we hope these convictions bring some measure of solace to the families in the knowledge that justice has been done."
The Old Bailey heard how the gang offered a "VIP" service to Vietnamese migrants, who gathered in Belgium and France.
They charged about £13,000 a head to transport migrants in a trailer via the Channel Tunnel or by boat to Essex.
The network, led by Nica and and Hughes, had been operating for at least 18 months, despite repeatedly coming to the attention of authorities.
In May 2018, Harrison, the "man on the Continent", was fined after being caught at the Channel Tunnel in France with 18 Vietnamese migrants in his trailer.
On 11 October last year, 15 people were shipped in a container dropped at Zeebrugge by Harrison and collected by Kennedy at Purfleet.
They then boarded a fleet of vehicles at Orsett for transfer to Dulwich where they were held by a Vietnamese man named Phong, whose job was to take payment, jurors heard.
Orsett resident Marie Andrews had witnessed the drop and rang police to report her concerns three times that day.
Three days later, Kennedy was stopped by French border agents at the Channel Tunnel.
He was sent on his way after 20 migrants were removed from his trailer, two of whom were among the dead on 23 October.
On 17 October last year, Harrison took 15 migrants and a load of macaroons and Bakewell tarts to Zeebrugge.
On arrival, Kennedy dropped the human cargo off at Orsett then helped Hughes try to disguise the fact that the biscuits were trampled and crushed.
That night, Nica was caught on CCTV with Hughes at a hotel in Essex carrying a bag containing £50,000, which he had allegedly collected from Phong.
On the morning of 22 October, Harrison picked up 39 migrants from Bierne in France.
His trailer was loaded on to the Clementine ship which departed from Zeebrugge at about 4pm, docking at Purfleet shortly after midnight.
Robinson, who collected the trailer at 1.08am, was instructed by Hughes via Snapchat to "give them air quickly don't let them out".
When he opened the doors, a plume of vapour escaped and Robinson stood for 90 seconds.
In the 23 minutes before he dialled 999, Robinson exchanged panicked calls with his boss Hughes and Nica, who had been waiting for him in Orsett with his drivers.
The first police officer on the scene described finding half-naked bodies "closely packed" together lying in the trailer, some "frothing at the mouth".
Mobile phones recovered from the victims showed how they had tried to raise the alarm and left goodbye messages for loved ones as they ran out of air.
Others had used a metal pole to try to punch a hole through the roof or attract attention, the court heard.
Kennedy, Harrison and Calota, who picked up migrants at Orsett on 18 October, variously claimed they had thought they were transporting cigarettes, alcohol and stolen lorry parts.
Nica admitted being roped in by convicted cigarette smuggler Hughes for earlier runs, but said he thought Robinson had a load of cigarettes when he showed him where he could unload in Orsett the night before the tragedy.
But prosecutor Bill Emlyn Jones told jurors the operation required "meticulous" planning and each defendant had to be "in the know".
