Chris Bath of BPTW Partnership spotted this cunning Darwinian pedestrian filter near Blackfriars bridge, dangerously close to Building HQ. It’s as if somebody out there didn’t like us …

Email your “favourite” health and safety pictures to building@ubm.com. The sender of every picture published in the magazine receives a £25 drinks voucher. No cash alternative will be offered. The editor’s decision on which pictures to publish is final. Please make the pictures as big as possible …