Aidan
The pawnbroker seems unlikely. There is listed :
Ensell Nellie B. (Miss), pawnbroker, 274 Icknield Port rd. However she is listed as a Miss, and the listing starts sometime between 1909 and 1912, as she is there 1912, but not in 1908. She is still there in 1921 but by 1932 it is still a pawnbroker, but run by a different person. The electoral roll shows her as being there in 1912 and 1920, but gone by 1925. It is probably the existence of this Nellie Ensell that gave rise to the story of her becoming a pawnbroker.
Mike