The Grand Award, the BALI National Landscape Awards' highest accolade, went to Frosts Landscape Construction for its "faultless" execution of a hard landscaping project at 3 Merchant Square in London.

The project was designed by Townshend Landscape Architects for client European Land, with architect Applied Landscape Design. Frosts also won the Principal Award for Hard-Landscaping Construction (non-domestic) costing more than £1.5m for the project.

Judges said that every aspect of the job had been carried out with precision and represented "the very best in hard landscaping".

Other Principal Award winners in their respective categories included Willerby Landscapes in the Soft Landscaping Construction over £1.5m category for its work on the Sky Garden at 20 Fenchurch St in London; Linden Landscapes Domestic Gardens, winning the Domestic Garden Construction over £250,000 for its build of an Andy Sturgeon-designed private garden complete with glasshouse, paving and decking aspects; and P Casey Land Reclamation, which won the Restoration and Regeneration Scheme category for its work restoring Cathedral Gardens in Leicester.

The Landscape Group won the Hard Landscaping Construction (non-domestic) under £300,000 for its work on Mandeville Place, the Paralympics memorial garden at the Olympic Park, while Integritas Landscapes (now Nurture Landscapes) took home the award for Grounds Maintenance: Limited Public Access for its work at Capability Green Business Park in Luton.