Doris Griffiths

Doris Griffiths worked as a cleaner at the Global Chemicals facility.

Biography
Doris discovered several giant maggots inside one of the waste shafts.

She was later impersonated by the Third Doctor in order for him to disguise himself while he investigated the company's suspicious activities. A guard asked him, "Doris", how her husband was doing. (TV: The Green Death)