Thanks for all the posts. I've had a few Andrew lessons and trying to get my young one in to his next one at SNEC. Interestingly I've actually had a couple of Jo Barry lessons but didn't say that as didn't want to direct the conversation any particular way - but I slightly felt the same as the comments. She told me what I was looking for but not exactly how to ride to get it
Interesting about Ernest, seems lots of positive feedback, might give him a try then - does anyone know where he teaches now? I can't have him at home for aforementioned lack of arena. Linda also teaches my riding club so I'll maybe give her a try too as she's very local to me (even nearer than Oatridge I think )