Another loose thread hanging from Labour's traumatic mayoral experience is Ken Livingstone's bid to be readmitted to the party.

BBC: Jackson's final stage

Just as in the corporate environment, a lot can happen when you start to pull on a loose thread.

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It sat, dangling like a loose thread, demanding to be pulled.

BBC: The bloom of cancer

As we thread our way down a steep trail of creosote and wispy dirt, a thunderstorm cuts loose.

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