How to avoid the tube strike

A couple of months ago I booked two random days' leave just because I wanted to use up some holiday before I lost it. As luck would have it, one of them was today when the entire tube network was shut down and it would have been a nightmare getting into work. Instead, I have done hardly anything today, and I almost forgot to even do a blip until this evening. I decided to experiment with a few selfies in the garden, balancing my phone on a box on the garden table and shouting "shoot" at it. It works!