Six people who made millions of pounds from selling more than five thousand ill or dying puppies have been sentenced.
They appeared in court alongside the vet who faked documents to say the animals were healthy and had received their immunisations .
The puppies were imported from Ireland to London and Berkshire and kept in appalling conditions.
Watch this report by Carolyn Sim:
Kept in poor conditions, these dogs were hungry and some had deadly viruses.
A gang of traders imported these puppies and thousands more like them from Southern Ireland. They lied to prospective owners claiming the animals were born into family homes, even showing them with a fake mother.
During raids of the gangs homes in Berkshire and Hayes (west London), RSPCA vets found dead puppies stuffed into black sacks and dumped in the back garden.
We spoke to Kirsty Withnall from the RSPCA:
3 members of the gang were jailed for 3 and 2 years, and all given a life-time ban on keeping dogs.
Vet Daniel Doherty was given a 12 month prison sentence suspended for 12 months. He's been signing off false paperwork and vaccinations.
Alina Lacaqusu bought a King Charles Spaniel puppy from one of the gang. In days, it became serious ill and died. She has paid more than £4,000 in vets bills:
This was one of the RSPCA's largest investigations into the underground puppy trade.
Pleased with the outcome, the charity will continue its campaign to ban the third party selling of puppies.