I'm slightly tickled by the fact that people might think I go around giving legal advice based on my own, non-lawyerly interpretation or 'argument'! When I give advice, in the event that there is room for interpretation, or I am not sure, or it's one of those areas up for debate in the tribunals to be decided by case law, I say so, it would be incredibly unprofessional and irresponsible of me not to do so.
In the case of this particular piece of legislation, I would certainly not dream of giving advice as fact without having checked it first, a lot. A Lot. Anyone who is in a position to be able to read legislation and interpret it may of course disagree, but anyone doing so isn't disagreeing with my personal opinion or 'argument', they are disagreeing with several different, very senior and experienced employment lawyers. Which of course anyone is free to do, but I would like to make it clear that is the case.
It seems that in the situation given, there are currently 3 posts. 3 people are at risk of redundancy, because in the altered structure going forward, the number of posts will be reduced from 3 to 2. The question is how should it be decided who gets those 2 posts out of the 3 individuals concerned.
The legislation states that a woman on ML can be made redundant (some think it is literally not possible), however where there is suitable work available, she must be offered it as a priority, not be made to compete for it with others.
In the situation outlined below, there is suitable work available. Two posts are available, in fact, available to three individuals, and both of the posts are suitable for this person. The only way they wouldn't be available is if the decision was given to allocate them to someone else instead of her. At the moment there are two posts available for three people, one of them should be allocated to the individual on ML, the other individuals should have appropriate selection criteria applied in order to decide who gets the other one.
If there is another suitable role elsewhere in the organisation, offering the woman that instead of one of these two roles would probably be enough to comply with the legislation, but choosing to make her redundant when she could have been kept on in a suitable role would not comply.
The fact that maternity leave can't be a factor in the selection of someone for redundancy doesn't negate or conflict with this. Redundancy isn't always about people doing the same job competing for a reduced number of posts, sometimes it's just one person, or sometimes a whole office or team. If someone's post is made redundant while they are on maternity leave, the fact that they are on maternity leave can't be all or partly the reason for that.
Oh, and what kind of ML it is is irrelevant, protection from sex discrimination would be the same throughout.