Another vote for summer fly cream. Also have found sudocream and also baby oil useful. You may find the horse will kick at himself to dislodge flies and his back legs get covered in whatever cream you use. I think the irritation caused by flies leads to swelling. My boy has access to a shelter...
I have a shirex cob . I have an xw balance saddle also a saddle company one they both fit him well. He has an extra large bridle . Rugs ,Shires are a good fit also weather beaters, but he is hard on rugs. He tales a 6'9 or a 7' rug . I like 100g gallop as they are cheap . He has ad lib hay lives...
I understand your concerns. You could make provision for your ponies, if anything happens to you. World Horse Welfare can send you information about making arrangements for them to take your ponies on , look at their website or phone for advice.
So sorry to hear that Oreo has died. You gave him a good life. He was a lucky pony to have met you.My thoughts are with you. You made a world of difference to Oreo.
People buy horse from Ireland everyday. Perhaps they should buy English bred horse? How far do we take this?
I think most people help where they can. We should all do our bit. Some one might rescue a horse from Ireland others from up the road.