Many thanks to Tim Harris for this picture of precarious perching in Bristol 鈥� even if it does slightly contravene rule two of his own safety blunder code.

Email your 鈥渇avourite鈥� health and safety pictures to building@ubm.com. The sender of every picture published in the magazine receives a 拢25 drinks voucher. No cash alternative will be offered. The editor鈥檚 decision on which pictures to publish is final. Please make the pictures as big as possible 鈥�

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