Some of these are horendous. I drove past one where there was a fish tank in the window, about 2ft long. In it was the largest fish I had ever seen. It's head and tail were almost touching the ends of the tank and it couldn't move. I thought it was a temporary arrangement but it was still there when I passed a week later. The next time I passed it had gone, whether inside or whether someone had reported it I don't know. I once went to a garden centre where they kept small animals and birds to sell. The birds were contained in a largish cage but with no room to fly about so they just sat on perches. My granddaughter who is doing a course at University on Animal Conservation and Biodiversity needed to find some work experience so she asked a pet shop if she could work there voluntarily. They said yes and she started there, they showed her around and there was a lizard type animal in a glass case and it kept throwing itself against the glass trying to get out. The owner of the shop took no notice so she walked out and never went back. She then went to work voluntarily at a vets where she helped in the operations room even if it was only holding the animal while it was injected, watching the operations and cleaning up the blood afterwards. She enjoyed it. I don't know if there are any inspections of pet shops. Maybe the RSPCA does it.