William Peel Dip GD. MSGD
Project Landscape Designer, Mazzullo + Russell Landscape Design
With a background in Architecture, William transferred to the Inchbald School of Design where he obtained a Diploma in Garden Design during which he also worked for a design and build practice, and after his studies, for Arabella Lennox-Boyd. William has experience working on a wide range of projects from major landscapes in America and Russia to smaller gardens in London.

William works on projects throughout the design process from inception and concept design to the detailed design and construction stage, as well as overseeing projects on site. He brings a strong eye for detail and is skilled in both hand-drawn and computer graphics including 3D modelling. William is also a registered member of the Society of Garden Designers.
Marc O'Neill
Landscape Designer, Mazzullo + Russell Landscape Design
With a family heritage of gardening, creative arts, and textile production, Marc made the transition from an award winning career as a Fashion Designer into the field of Garden and Planting Design. Marc trained at KLC School of Garden Design, Hampton Court Palace, and has an RHS Level 2 certificate in Practical Horticulture from Capel Manor, Regent’s Park.

In 2015 Marc won the Grand Designs Live Garden Designer of the Year Award judged by Kevin McCloud and James Alexander-Sinclair and was subsequently asked to design a Seasonal Garden at Grand Designs Live for River Cottage. Marc has also gained valuable experience working in the USA at The High Line and Chanticleer, has supported the editorial team at Garden’s Illustrated Magazine, and helped plant several Chelsea and Hampton Court Flower Show gardens.

Marc worked as a Garden and Planting Designer for Chelsea Flower Show winner Andy Sturgeon for two years on projects including National Trust Benningbrough Hall.

Since 2015 Marc has been developing his horticultural skills at Great Dixter, working as a volunteer in the garden under the tutelage of Fergus Garrett.
Alexandra Hollingsworth PG Dip GD.
Junior Landscape Designer, Mazzullo + Russell Landscape Design
Alexandra came to garden design from a business background, working with PwC as a strategy consultant, and with Sainsbury’s as a senior manager. Alex made the transition to garden design whilst living in Ireland, gaining her RHS Level 2 Certificate in Horticulture, and studying for a post-graduate diploma with the Garden Design Academy of Ireland.

Shortly after setting up her own practice, Alex won Ireland’s national competition for new designers. This led to her exhibiting a show garden at ‘Bloom’, Ireland’s national garden show, where she won a silver medal. Alex continued to work on a range of private projects in Ireland, before moving back to the UK in 2016 and joining Mazzullo + Russell.

With a passion for plants, strong commercial acumen and an eye for design, Alex supports Libby with planting design and sourcing. Alex is a student member of the Society of Garden Designers and the Garden and Landscape Design Association in Ireland.