Really? How come your companies with over 20,000 & 25,000 get away with not having to have one, yet my local athletics club (which I am still involved with behind the scenes) with only over 400 members max, HAS to have at least one person dedicated to such a role by law?
I can’t say I know much about the law on this subject but I have spent most of my working life working for, and liaising with, large companies and they all have roles, boards, councils etc relating to diversity. Maybe it’s my sector? But I would expect this in a large company, more as artefact of a large company as opposed to anything else; if you have 20000 plus employees you need a full time team just to handle the staff stationary so you’d certainly need dedicated resource to look after specific elements of their well-being.