‘I was told it was selfish to be disabled and have a baby – I’m glad I didn’t listen’

When Amelia Peckham came off a quad bike and broke her spine aged just 19, her life changed in an instant. Becoming a mother seemed a distant and impossible dream. Now mum to two sons and the founder of a thriving company, she tells Helen Coffey why ‘concerned’ onlookers need to mind their own business