I've been browsing through, and have seen rider insurance mentioned here and there. I'd just like to warn all the parents out there. We had rider insurance for both of my kids. Long story short, there was an incident and the other person involved wanted to claim from us. The insurance company basically said, you can't claim against a minor for public liability. So having the rider insurance for the kids was pointless. We now always take out horse insurance when we need cover, and I as the parent, who would ultimately shoulder the burden of any claim against the kids, have BHS membership, which provides me with PLI for any horse I own, handle or work with, and also a free legal helpline.
Thankfully, the other person in our incident didn't have a case against us, but in the event she had, the claim would have passed to me as the responsible adult, and I had no kin of cover whatsoever! A potentially scary situation!