Yes, it does. If it's true that they were Chinese, it would have been part of a very sophisticated operation. This article appeared in the Times in 2018:
Chinese gang charged £18,000 for ticket to UK
Graham Keeley, Madrid | Richard Ford, Home Correspondent
March 14 2018, 12:01am,
Spanish police seized phones, fake passports and thousands of euros
Spanish police have broken up a huge Chinese trafficking gang that charged migrants nearly £18,000 each to take them to Britain.
Detectives arrested 155 Chinese citizens in raids in Barcelona, Madrid and other cities across the country. Among those detained were a woman and three men suspected of being the masterminds.
The gang charged each migrant €20,000 to bring them from China, hide them in flats around Spain, teach them some English phrases and supply them with fake passports. The smugglers would buy the migrants cheap flights to Heathrow and Gatwick. Some were also trying to reach Ireland.
The organisation supplied migrants with fake passports from Hong Kong, Macau, Japan and Taiwan because people from these territories do not require visas to enter the EU.
Most of the migrants were from professional backgrounds and aged between 30 and 50, police said.
Once they arrived in Spain, they stayed in safe houses until the gang had their documentation ready. They would generally buy the tickets for their flights on the same day that they were due to leave to try to evade police.
The British immigration service and Spanish police had been investigating for three years. Detectives from the Spanish National Police’s anti-trafficking squad became suspicious after a large number of Chinese nationals were stopped using fake identity papers at Barcelona airport. The gang was arrested only after five illegal immigrants agreed to testify against them in return for entering the witness protection scheme.
“The dismantled network was extremely hermetic, structured and hierarchical,” Cristina Hermosa, head of the Spanish anti-trafficking unit, said. “They had a recruiter working in China and four people organising the operation here. It is hard to say how many others may have got through to the UK.”
The four alleged ringleaders have been charged with human trafficking, belonging to a criminal organisation and falsifying passports. The 151 others face charges of falsifying documents.
Fake passports and about €11,000 were seized, and Spanish police are still hunting for the recruiter in China.
One British immigration source said the operation appeared to be highly sophisticated. “£18,000 to reach Britain is a high figure. They are being charged for a gold standard entry. Normally it is £8,000 to £10,000,” the source said.
The UK has worked closely with Spain and its police in the past on tackling illegal immigration because it has been found to be a route gangs use to get illegal migrants into the UK. Last August more than 100 people were arrested in Spain on suspicion of being part of a network smuggling Iranians into the UK on commercial flights.
The network, which operated out of Malaga, charged migrants about €22,000 for fake Spanish passports, travel documents, transfers and accommodation, according Europol. [end]
There's another article about Zeebruge - Purfleet being a favoured route.