In 2031, the National Trust for Scotland will celebrate its 100-year anniversary and, to mark the occasion, it has asked Charlotte Harris and Hugo Bugg of the award-winning Harris Bugg Studio to create a Centenary Garden at one of its most impressive estates.

Newhailes House & Gardens in Musselburgh, five miles east of Edinburgh, will get a new three-acre garden within its historic walled enclosure. The space was formerly the estate's Flower Garden, its most ornamental area.

The new plans will draw on 200-year-old designs, dating back to a time when Newhailes was home to an independent, curious and progressive woman of the Scottish Enlightenment, Miss Christian Dalrymple.…