Mary Berry's body was forever damaged after she contracted polio as a child.
The UK Health Security Agency declared a "national incident" earlier this week after the virus was found in sewage samples in London. Although it is normal for the virus to be picked up as isolated cases and not detected again, experts have raised the alarm after several genetically-linked viruses were found in samples between February and May.
However, a "national incident" has been established to check for cases elsewhere as a precaution as officials investigate the extent of community transmission. The consultant epidemiologist at the UKHSA described the risk as low, but urged people to check they are vaccinated against polio.
