I have spent the past 30 years living like a nomad. I have done land mines, coups. I have been hijacked, and I've nearly drowned trying to help people. I've seen off two husbands, and somewhere out there is an adopted son who hasn't called me for six weeks. And if that's not enough, I was an air hostess in the early '80s. And trust me, compared to that, a building full of Cybermen is nothing.