This week, it is our duty to remember those who died in the 7/7 bombings and think of their families' loss. After that, we have to go to work finding ways to debate our world and the place of religion and race within it so that child - that universal, fearful child - can turn to us, rather than away from us. And that we as Londoners can feel safe in our lovely city. That is the real meaning of 'prevent'.
Like many Londoners, 7 July 2005 began for me as a normal working day. I drove from my flat in Queens Park to Ealing where I was working as an estate agent. Morning briefing done, our team of sales negotiators 'hit the phones' to drum up business and book appointments. Then people's mobiles started beeping. Other offices started calling in. Something was going on in central London.