Steve Clamp had a sneak peak inside the Derby Arena before the special ceremony got underway to officially open it.
He also spoke to Cllr Martin Repton, from Derby City Council, who defended the £28million spent on the venue.
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18-year-old student Thomas Jones was last seen close to the River Severn at Worcester Racecourse in the early hours of Wednesday.
Monday will be mostly sunny though remaining rather cool, with perhaps the odd shower over the western hills in the afternoon.
After a chilly start it will be a fine day, with good spells of sunshine.