In 1909, Bentham moved to London, where she lived with Marion Phillips in Holland Park, her home serving as a meeting place for like-minded women. She established a practice in North Kensington and was an expert on childhood enuresis (bedwetting) and an early believer in what would now be called socialised medicine. In 1911, Bentham was a driving force behind the establishment of a mother and baby clinic in North Kensington, founded by the Women's Labour League in memorial to Margaret MacDonald and Mary Middleton. The clinic was the first in the country to provide medical treatment alongside advice. Bentham served as the clinic's chief medical officer, and benefactor, underwriting its expenses.