The Team


Gavin McWilliam
Gavin graduated with a first in Fine Art before going on to achieve a distinction for his masters in Landscape Architecture at Greenwich University. He is a Chartered Member of The Landscape Institute, Registered Member of the Society of Garden Designers and a Registered BALI designer.
Andrew McWilliam
Andrew is a Fellow and former Chairman of the Society of Garden Designers. He is a lecturer, a respected author and regularly assesses and judges for the RHS.
McWilliam Studio is one of the country's leading garden design practices. The studio is led by Gavin McWilliam in collaboration with Andrew Wilson and both are seasoned designers at Chelsea having designed four show gardens previously.  They have won over 30 National and International awards for their work, including a Gold medal for the 2017 ‘Breaking Ground’ garden, which was also sponsored by Darwin, under its previous name Darwin Property, and Best in Show at the Singapore Garden Festival.

McWilliam Studio is based in Buckinghamshire and works across London and the South East as well as internationally. Sharply detailed construction, elegant spaces and inspirational planting design percolate through their unique design responses.
McWilliam Studio, 3rd Floor
12 The Broadway, Old Amersham, Buckinghamshire, HP7 0HP
TEL: +44 (0)7704277304


The Memoria & GreenAcres Transcendence Garden will be constructed by The Outdoor Room, who also worked on the Breaking Ground garden.  The Outdoor Room is one of the most celebrated landscaping companies at the RHS Chelsea Flower Show and a successful contracting company for gardens and landscapes in the South East corner of the UK. They offer a comprehensive service to private clients, developers, garden designers and landscape architects.
The Outdoor Room, The Barns,
East Street, Turners Hill,
West Sussex, RH10 4QA
TEL: +44 (0)1403 865285

Plant Nursery

The plants for the garden will be grown and cultivated by Hortus Loci, a leading wholesale plant nursery which works with landscape architects, garden designers and landscapers. Hortus Loci has one of the largest available ranges of perennials, shrubs, trees, topiary and hedging, most of which are grown at their site in North Hertfordshire.
Hortus Loci
Hound Green, Hook,
Hampshire, RG27 8LQ
TEL: +44 (0)118 9326 495
Deepdale Trees Ltd is a grower of semi-mature trees and shrubs for the professional trade market. The company was established in 1995 and specialises in the production of both Air-Pot® container and field grown semi-mature trees, shrubs and hedging.
Hortus Loci
Hound Green, Hook,
Hampshire, RG27 8LQ
TEL: +44 (0)1767 262636

Water Feature

Bamber Wallis has been creating and making water feature since 1989. Bamber offers a fully comprehensive, bespoke service and he is involved in every aspect of the design and build. Bamber also offers a maintenance service for water features as well as restoration or refurbishment of existing water features.
Bamber Wallis Designs,
3 Hope Lane, Farnham,
Surrey, GU9 0HY
TEL: +44 (0) 1252 715139
Water Artisans specialise in the creation of biologically treated landscape water features, swimming ponds and ‘living’ swimming pools. They work with landscape designers, landscape architects and private clients in the UK to provide technical design expertise as part of a design and build package.
Water Artisans Ltd.
Unit 11, Mellstock Farm,
Dorchester DT2 8QJ
TEL: +44 (0)1305 858922

Structural Engineering

Morph Structures are a dynamic, creative, award-winning practice of consulting structural and civil engineers with a passion for the built environment and engineering excellence. They are committed to reducing Carbon in their structures and their approach is underpinned by extensive experience and a thorough understanding of material behaviour, structural forms and construction processes.
Morph Structures
221-222 Shoreditch High St,
London, E1 6PJ
TEL: +44 (0)20 3978 7300

Concrete Precasting

Cambridge Architectural Precast design and manufacture a complete range of precast concrete and reconstructed stone units. They produce highly specified concrete units using detailed drawings and bespoke timber moulds, with everything hand-made in their own workshop.
Cambridge Architectural Precasting
17 Chiswick Avenue,
Mildenhall, Bury St. Edmunds,
Suffolk, IP28 7AY
TEL: +44 (0)1638 711811
Get in touch
To find out more about the Memoria & GreenAcres Transcendence Garden and the businesses behind it
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