Big Brick Button

My last day (for now!) on the West Cambridge Site led to a bit of a scrabble to find a good shot. The light was fading and it there was a cold wind that cut through my smart-rather-than-comfortable suit. I grabbed this then dived onto the bus.

It's interesting how looking at it now the anti-pigeon spikes on top of the vent seem out of place. I never noticed them at the time...