He claimed to be a family-run rescue and said he had qualifications as a behaviourist. He took in dogs whose owners couldn't look after them any more, particularly those with behavioural problems that the owners were struggling to manage. He promised to rehabilitate these dogs and rehome them with loving families, assuring their original owners that there would be regular photos and updates, but in most cases nothing was heard of these dogs again.
His "rescue" had been reported to the authorities on many occasions by concerned neighbours and former owners wondering what had happened to their pets, but to no avail.
In the last week or so, prompted by the terrible smell coming from the property, a neighbour sent a drone up and submitted the resulting footage to the police. This is what led to the raid on the premises.