A note on the back of this studio portrait says either “Harold Winnie” or “Harold & Winnie.” While Winnie could be a last name, it’s more likely the first name of the girl on the left, who must be Harold’s sister.
The studio is identified on the mat just below the image: Gordon & Blees. J.H. Gordon took over the studio owned by John Blees and his wife sometime around 1914, and may have been in partnership with them prior to that. John Blees is best known for his 1877 book Photography in Hindostan; or reminiscences of a travelling photographer.
Here’s an ad from a 1920 publication called International Trade Developer (Vol. 17, p. 401):