Are you really going to argue horse accidents over autos? Boating? How many people in England set foot on a boat back then? I’d wager the vast majority stayed damn close to home their entire lives. And a much higher percentage of people lived in rural areas compared to today.
Yes. Horses are very dangerous.
Most of England is close to water. If not a river, then the coast.
As for rural areas, you are making my case.