I think I have worked this out if anyone is interested.

This is Francis GINN (b 1886) and Eleanor (b 1888) at the wedding of his sister Elizabeth in 1910.
Francis was a chimney sweep (I originally thought the photo was of his father, who was also a sweep).
Francis and Eleanor were married in 1905, too early for this photo, but on further research found the marriage of Elizabeth which ties in quite nicely.