Suggested organisations to look into:

https://www.futurelearn.com/info/courses/stem-volunteering-resourcing-diversity/0/steps/36055

https://www.wisecampaign.org.uk/statistics/updated-workforce-statistics-to-september-2020/

https://www.aontas.com/knowledge/publications/

https://www.udacity.com/pledge-to-americas-workers

Nice read on (perceived) barriers as well: https://hbr.org/2018/05/what-most-people-get-wrong-about-men-and-women

Findings from other organisations (random collection)