Fast food chain KFC has launched an investigation after a scientist from Leeds Beckett University found bacteria from faeces on ice that was served to an undercover journalist.
The discovery was made at the KFC branch in Birmingham's Martineau Place by researchers from BBC One's Rip Off Britain show.
They were looking into food hygiene standards at several big name takeaways and coffee shops. Most of the samples turned up low and harmless levels of bacteria, they said.
In a statement KFC told the programme that it was "extremely disappointed" by the ice test results adding that it had "immediately launched an investigation".
KFC also said they were undertaking "a retraining programme with all team members on our standards for touch point cleaning and procedures".
The restaurant chain added that it takes "food safety and hygiene extremely seriously".