Does a livery yard owner have a legal standing to see a loan agreement between 2 people? Both have shown proof of public liability and signed the yard agreement.
As YO I can see why they would want to know who is responsible for what £££'s wise (can the loaner request extra bedding / hay etc.) and also whether the loaner is allowed to take the horse off the yard for shows etc.
So there is plenty in a loan agreement that it might be handy for the YO to understand to avoid any mis understandings - and likely nothing in it that was so top secret it would be embarrassing / unpleasant to share.