They were found dead in the back of a lorry in Essex in England
The victims, who were all from Vietnam, were discovered in a refrigerated container in Grays in October last year.
The driver, 25 year-old Maurice Robinson from Craigavon, County Armagh, has entered his plea at the Old Bailey in London.
He's one of five men on trial - though they're appearing remotely because of the coronavirus outbreak.
