A total of 60,000 tickets for the hotly-anticipated rematch between Carl Froch and George Groves were sold within just one hour of going on sale.
The pair came face-to-face for the first time since Froch was controversially named winner of the WBA and IBF World Super Middleweight championship in November.
The rematch will be held at Wembley on May 31.
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Highways England say the work will be completed in eight weeks rather than 30 weeks.
An NHS trust declined the £2,500 raised by a group of men dressed up as female nurses saying the costumes were "insulting".
The 15th century penchant was discovered by a metal detectorist just outside the moat of Kirby Muxloe Castle in Leicestershire.