I’m just back from the visit, I asked if they’ve had/what’s the procedure, she said any marks they notice (acquired in or out of nursery) are documented and discussed with parents. Big bumps, parent is contacted ASAP on their mobile.
She wasn’t flustered about it, explained that when they start to crawl and toddle collisions with other children and toys do happen.
I think I’ll visit one or two more even though they are too far, just so that I get a better idea how they stack up.