The charity behind a concert hall designed by David Chipperfield for Edinburgh has lined up a contractor despite a legal threat from a neighbouring developer.

International Music and Performing Arts Charitable Trust Scotland has signed a pre-construction services agreement for the £45m scheme with Sir Robert McAlpine.

The Dunard Centre – previously known as the Impact Centre – will be the Scottish capital’s first dedicated new space for music and the performing arts in more than a century and will have a 1,000-seat auditorium at its centre. Home to the Scottish Chamber Orchestra, it will also include a studio providing rehearsal, recital and recording areas.

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