When I was at 422 I think the highest team numbers were about 1o creatives, only one of which was a woman. However there were several art directors and producers who were women, comprising about half the "management" department.
I do think this is changing though. Both my partners daughters are doing degrees in animation and the courses seem to be pretty equally divided between the guys and the girls.
The argument that 3d software is just too complex for women is obviously ridiculous and very dated but maybe it dose still hang on in some places and in the subconscious of both some men and indeed women.
Couldn't find a representative graph showing the details but this is quite an interesting article.
Women in the fieldCheers
Richard
ps: I used to play LOTRO as "Rose", constantly had to fight of advances of pubescent idiots chasing my tail! LOL