About us

Meet the Team

Green Oak consists of a group of specialised individuals covering many disciplines but are united by their love of the outdoors and a passion for their craft.

Stuart Christie


Stuart Christie has been firmly rooted in the outdoors from a young age. He holds a BSc in Countryside Management and Applied Ecology, focusing on Land Management and Countryside Law, an HNC in Landscape Design and Construction and an FD in Amenity Horticulture. Stuart works closely with the British Association of Landscape Industries and the RHS in promoting and encouraging young people in horticulture.

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Ron Lento


After 30 years of working in management for large international companies, Ron joined Stuart as a business partner in 2020 to set the path for the successful growth of Green Oak. With the fierce drive characteristic of his American roots, Ron has overseen investment in state of the art equipment, technology and systems to enable Green Oak to embark on its next chapter of improvement and strategic expansion.

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Marlene Lento


Marlene Lento studied Interior Architecture at the Academy of Applied Arts in Munich and Environmental Design at the University of California Los Angeles. She spent five years designing for California’s rich and famous before settling in ‘the Garden of England’. Marlene oversees our design studio and enjoys the great variety of styles she gets to create for clients.

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Toni Barrows

Business Manager

Toni coordinates all of our finances behind the scenes as well as supporting the managers’ efforts in the office. Responsible for our accounts and invoicing, she ensures our business can function as efficiently as possible.

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Mia Venes

Administrator and Marketing Coordinator

With a focus on our online presence, Mia coordinates our marketing efforts, planning to grow brand awareness. Mia also works alongside Toni to support department managers, and handles new enquiries and scheduling.

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James Smith


James is a qualified tree surgeon with 14 years experience. He has worked in Royal parks such as Richmond Park managing and preserving the veteran oak trees. James handles tree work quotations, tree surveys, aerial climbing inspections, tree mapping, tree tagging and pest and disease management.

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Marcus Cameron


Marcus carries out the technical aspects of our operations, including mechanical, electrical and lighting installations, and he is responsible for Green Oaks’ Health and Safety. Marcus advises on and commissions our water installations as a certified electrician and registered OASE pump and equipment installer.

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Team Leader

There is nothing Matt can’t build and do so brilliantly. He is known for delivering complex projects detailed immaculately and at astonishing speed.

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Rob leads our minor works and fencing division. His role encompasses much of our reactive work and smaller projects. Rob’s resourcefulness and dynamic thinking is an asset for some of our more unusual assignments.

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Ged is most at home amongst beds and borders, taming overgrown gardens into refined, beautiful spaces. With Ged, knowledge and advice is plentiful; a real plant smith and all-around garden guru!

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Efficient and reliable, Toby oversees our larger commercial sites. From grass cutting to line marking, his versatility is always welcomed as we adapt and respond to the ever-changing needs of our amenity clients.

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Tom brings with him a broad range of estate skills, from minor repairs to ongoing land husbandry. Seen and not often heard, Tom works hard with quiet determination and fortitude, a great asset where discretion is key.

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Portfolio Manager

Sara has many years' experience in soft landscaping and designing and implementing planting schemes. With extensive knowledge of plants from propagation to sourcing, Sara acts as our client liaison for large gardens and estates.

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Our History

After a secondment to oversee the renovation of a large residence on the Crown Estate, Stuart set up Green Oak Services in 2006. To date, Green Oak has designed and delivered projects for over 500 domestic and commercial clients and contracts covering all major outdoor disciplines.

With time, we have built a solid and dedicated team, driven by a love of the outdoors and delivering quality services and gardens.

Accredited and Approved

Green Oak are proud to be accredited by many industry bodies and are approved installers for many significant suppliers, local authorities and trusts. Below is a selection of who we work with. View our accreditations

Our Partners

Over the years, we have forged relationships with suppliers of materials and services that we know we can rely on for a quality product and great value. The proven track record of these companies gives us peace of mind when we collaborate. find out more

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