Q&A: “Working livery” insurance

Q: I am moving to a livery yard where the yard owner gives a few private lessons. My 10-year-old ID/Thoroughbred mare will be used for one or two lessons a week, with my consent.

My horse is covered for accident, illness, death, fire and theft. Will I need extra insurance to cover the use of my horse in lessons, or is that the yard owner’s responsibility?