Thanks, Sunnee_Dee. That's an intriguing thought but unfortunately the Emma Parker living in Stapenhill Road, Burton-On-Trent, is 7-8 years too young to be my grandmother. I'm reasonably certain that my Emma Parker was an inmate of the Birmingham Workhouse in the 1911 census. She was born in 1882 and appears in the census as a single woman, aged 28, born in West Bromwich. I've traced her back in earlier censuses.
She would have been about 7 months pregnant at the time of the 1911 census so may have found it difficult to get employment.
Thanks for taking the time to do a search.