Moses Olanrewaju, 40, and Olatunji Mustaffa, 33, were sentenced Friday by a London court in what was described as a $19 million (10 million British pounds) scam. The pair are also seeking asylum.
The operation is thought to have churned out about 2,250 fake credit cards. Some 600 more were in the midst of production when they were seized.
The Scotsman reports the operation was mounted in the front bedrooms of a couple of terraced houses. Police described it as "highly sophisticated."
Prosecuting attorney Brian O'Neill told the court fake documents manufactured by the pair included passports for at least five countries, government letters and e-mails, birth and death certificates, driver's licenses, insurance cards, utility bills, bank statements and checks.
Also seized were laptops, "skimming" machines, a data reader and embossing and hologram-making machines.