Ffion Hague, wife of Foreign Secretary William, has completed her abseil down The Shard building in London.
She has told reporters she is glad it is over. She admits she would not necessarily want to do it again but says it was exhilarating.
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Jessica Urbano Ramirez was two weeks away from her 13th birthday when she died in the June 14 blaze.
No-one was on board the single-decker vehicle, Humberside Police said.
The disgraced film producer has been the subject of an investigation in the US into allegations that he sexually assaulted numerous women.