It’s not just the weather bringing me down today. Two minutes into my ride home from work my bicycle got into a somewhat unfair battle with a stray nail on the road.

I’ve never experienced a tyre go flat so quickly before. It went from intact to fully deflated in under a second. Fortunately it happened at one of the few times today when it wasn’t raining, so I was able to change the tube and get under way again without too much bother.