A plan to construct a walkway on top of the O2 has been submitted to Greenwich council.
The proposal, drawn up by the Dome's original architect, Richard Rogers, consists of a narrow suspended walkway spanning the roof, with a circular viewing platform at the apex. Visitors would wear safety equipment and be led in groups by a trained instructor in a 50-minute walk across the 365m-diameter roof. The idea has been knocking about since at least 2008, but only now have firm plans fetched up on Greenwich council's doormat.
Hat tip: @hughpearman