The problem is that gender shouldn't even be brought up in any sort of workplace.
The people that are best at the job should be the ones hired, doesn't matter if the work place is 100% women, 100% black, 100% white, 100% muslim, 100% whatever provided they are the best people for the job.
Having to meet a certain men:women ratio just for the sake of it (despite who is the best suited for the job) just highlights a massive problem for the UK at the moment.