When my daughter died after being struck on her bike by a cement lorry, I found the inquest a complete nonsense. I went into a deep depression and could have given up entirely. Instead, I got angry and thought, “No, I am still her mother and the system is not going to treat Alex this way.” So I bought shares in the company that owned the lorry that killed her. It was the only way I could think of to get them to face me in person and listen to what I had to say.

Alex was 26 years old when she died, 10 years ago last month. She had a masters degree and a new job with a legal firm in the City, where she had met her boyfriend. She was cycling to work when it happened. Her life was just beginning when it was taken from her.

I bought ￡500 worth of shares in Readymix, or RMC as it then was: enough to give me the right to ask questions from the floor at their AGM. The meeting was at a very grand hotel near Park Lane. I was very nervous, but a friend thrust my hand into the air at the right time, and I read out what I had prepared. I wanted to know what had happened, why it happened and how they could stop it happening again. Everyone went quiet. Then the chairman asked the board member responsible for health and safety to contact me. To my surprise, he did; he came to London and we began working together.