First, the theft.
I was walking to my office and ended up waiting at a crosswalk on Oxford Street. I suppose every tourist must learn the hard way not to do this... buuut I thought I'd reply to a text and pulled out my phone. Not even 30 seconds later (literally) someone on a bicycle zoomed by and snatched my phone straight out of my hands. By the time I had processed what had happened, the person was already 2 blocks down and I knew my phone was gone.
Clearly this thief was a pro at this. :(