‘Our child died because doctors didn’t listen – Martha’s rule will ensure patients are heard’

In the summer of 2021, a few weeks before her 14th birthday, Martha Mills was on holiday in Snowdonia with her parents, Merope and Paul, and her younger sister Lottie. On the second morning of their trip, while cycling back from the beach, Martha’s wheel slipped on a patch of sand and she fell off her bike, one of the handlebars jarring into her abdomen. Cycling ahead, Paul had wobbled on the same section. For the rest of his life, he says, he will wonder why he didn’t stop and tell his daughter