Can A School Take A Pupil For An X-ray Against Parental Consent?

Hello, I have a possible broken bone in my arm. My school agree that it looks broken. My parents however don’t. My father is a doctor and insists it isn’t broken. this injury is relatively bad and my mother agrees with my father because of his job. However my father doesn’t like his children to have injuries that require treatment. He doesn’t want us to go to his hospital with a severe injury or an injury that will need a cast or anything like that. As a result both my school and myself suspect he is saying it’s not broken so he doesn’t have to treat it. School have requested an xray, however my parents are refusing to do it? Can my school take me for an X-ray and if not what can I do?

Age 16 in Devon, UK