At the Elephant there was a difference between the 2 main roads where we counted. On Newington Causeway going south there is some segregation and a safe junction. Here there were 23% female cyclists. On London Road where there is no protection and a still dangerous junction there were only 16% female cyclists.
None of this is actually very surprising. But it does demonstrate clearly that if we want more cyclists from a wider demographic, improving the quality of cycle routes is an effective way to do this. And an important aspect of quality is not cycling alongside heavy motor traffic and not competing with it at junctions.
Raw counts in the Excel sheet below