I couldn't tell you what the proportion of male to female trainees are , however NATS is most definitely not a discriminatory employer.
The days of the dinosaurs have long since gone and as a woman your prospects are as good as you wish to make them.
Being a trainee with children is hard whether or not you are male or female, your time is taken up with a considerable amount of study and long times away from home, either doing On The job training or holding for the start of a course.
We need crèche facilities made available but apart from that as a woman I can make no negative remarks against NATS and their equal opportunities policies