Pet owners want reassurances their pets are being cremated properly
In February 2011 Emma Bent was jailed for eight months for dumping the bodies of her customers' pets in a field.
The pet owners, some of whom were from Nottinghamshire, had assumed their animals had been properly cremated.
The scam was uncovered when dogs sent for cremation were discovered dumped in a field in Derbyshire.
Now pet owners are demanding a change in the law to ensure vets witness the cremation of the animals, which were in their care.
Keyworth vet John Davison has always meticulously labelled and bagged pet remains.
But he had never witnessed a mass cremation. The Emma Bent case prompted him to make a visit to his local pet crematorium to see how it was done.
"Every vet should go and visit and personally watch the [cremation] process underway to be satisfied that what they're telling their client is the truth."
More victims of Emma Bent's deception have emerged since she was convicted.
Sue Southall from Bilborough in Nottinghamshire lost her Doberman, Tyson, after a long illness.
She took Tyson's casket, supplied by Emma Bent's Peak Pet Cremations, to Antara - a private pet crematorium in Nottingham.
After looking inside the box, John Harbury-Carlisle from the crematorium had bad news for Sue.
The ashes were only two per cent bone, the rest were the remnants of whatever fuel had been used.
Sue was devastated.
"He meant everything to the family. Everywhere we went we took him with us," said Sue.
"I'm wondering where he was, where he might be, what's she done with him?"
There could be hundreds more like Sue.
BBC Inside Out East Midlands
have made a film about the Emma Bent case and the distress she caused people in the region. You can watch the programme on Monday 28 February, at 7.30pm.