Final answer:
Emmeline Pankhurst was the radical suffragette in England who led the movement demanding votes for women.
Step-by-step explanation:
The radical suffragette in England who demanded votes for women was Emmeline Pankhurst. She was a core figure in the women's suffrage movement, forming a group known as the Suffragettes in 1903 with her daughters Christabel and Sylvia. The Pankhurst family was influential in advocating for women's rights and utilized a campaign of direct action that escalated from peaceful protests to more radical acts such as stone-throwing and other forms of protest.