The men who have changed their ways as a national emergency is declared
Cal Roberts remembers the moment when he realised his behaviour could be intimidating towards women. He was taking apart a piano in his living room, when one of the wires pinged off and stuck into his hand.
"I lost my temper and I hit the thing with a hammer about five times," recalls Cal, 34. "I turned round and my girlfriend was crying - and even though it wasn't directed at her, I realised I'm six foot five, I'm 17 stone, she's five foot five and tiny - I'm an intimidating presence. It upset...