LUL managers appear to think they are in the TV series 'Life on Mars' as they have woken up in the 1970s (or even earlier) and banned pregnant women from driving trains. They have thrown a particular woman - Kyria Pohl - off her Train Operator training course, and stated that yes, this is because they will no longer allow pregnant women to be in training or to drive a train.
Note to management: PREGNANCY IS NOT AN ILLNESS. Moreover, every pregnancy is different, and while some women may need to avoid particular work tasks while they are expecting, many do not. It is not management's job to treat women staff as though they are fragile and/or incapable: it is to protect their safety and respect their rights. Instead, the company seems determine to deny pregnancy women their dignity and rights - and in the case of trainees such as Kyria, their income as well: being kicked of the course means not getting T/Op training rates of pay, then full rates once passed out.
Fortunately for Kyria, she has a strong and effective union rep at her side, and RMT lawyers are already looking at this case. After all, it is unlawful to discriminate on the grounds of pregnancy.