The Team

Rangana Oliveira - Director

Rangana founded Tree Research with Charlie in 2004. Her business and strategic background has been instrumental in growing and developing all aspects of the business and she oversees the day to day running of the business as well as planning for the future to ensure we continue to meet client needs.

Rangana is currently reviewing the company sustainability policy to ensure the company remain environmentally responsible moving forwards.

Rose Cooper - Finance Manager

After spending over 25 years working in finance/HR and business management, Rose took up the role of finance manager in April 2018.

 Rose’s responsibility is to oversee all aspects of finance functions. Her aim is to use the best financial models and analysis to give strategic direction and to understand how to ensure sustainable growth for Tree Research.

Thadeus Lear - Project Supervisor

Thad joined us in 2018 to oversee the planting team and his organisational skills help ensure projects run smoothly. He works closely with Charlie and you are likely to meet him on site before your project starts. Thad brings his previous expertise in tree surgery and horticulture to the job to provide a comprehensive service to the client.

The core planting team comprises Anthony, Jack, Keith, Rob and Thad.

Stuart Roberts - External Consultant
Arboricultural Consultant

Stuart has 20 years arboricultural experience in the private sector, the first 10 years of which were spent as a tree surgeon and contracts manager, where he gained extensive industry experience before specialising as an arboricultural consultant over the last 10 years.

He has extensive experience dealing with local authority tree officers, building contractors, utility companies and tree work contractors. Specialist services include providing tree surveys and advice to a range of clients including architects, landowners, solicitors and local authorities. 

Jake Hobson - External Consultant
Topiary & Pruning Specialist

Jake Hobson is one of the country’s leading topiary and pruning specialists.  Influenced by his time in Japan, and his creative background. (Jake studied sculpture at the Slade in London) Jake is interested in what he calls organic topiary, combining traditional European topiary with Japanese Niwaki pruning and contemporary cloud pruning.  Jake consults and lectures around the world, has written several books and runs workshops in the UK.

Will Davis - External Consultant
Creative Designer

Will is Creative Director of Studio Davis, a 3D innovation design agency. Will and his team help bring our creative ideas to life by translating visions and concepts into detailed design drawings and ensuring their viability.

Chris Enderby - External Consultant
Landscape Planning, Design & Management

Chris’s work covers a wide spectrum including residential, commercial and leisure developments as well as renewable energy projects, many of which involve landscape and visual impact assessment (LVIA). Chris also has extensive experience of Public Inquiries and Planning Appeals.

Chris has over 30 years’ experience in the UK and overseas and provides landscape and environmental planning, landscape design and management services.

Charlie N Marsden - Director & Lead Consultant

Charlie is the founder, lead consultant and director of Tree Research Limited.

Charlie oversees all aspects of Tree Research including design, consultancy, sourcing of trees, and planting. A ‘hands on’ creative director, he enjoys meeting garden designers, landscape architects and private individuals to explore, support and develop the client’s vision for their project.  He remains involved throughout client projects, with the support of his growing team. For more information on Charlie, please click here.

Michael Buck - Procurement Manager

 Michael joined Tree Research at the beginning of 2018, having spent 4 years at a perennial and tree production nursery. 2019 brings him into his 13th year in horticulture, having gained extensive knowledge across a varied skill set within the industry.  
Michael’s strengths lie heavily in client relationship and he supports Charlie in providing consultation, design and project management. As procurement manager, his main focus is on the sourcing of outstanding trees, shrubs and topiary and all trees are handpicked. He can procure the trees for every type of project, whether a parkland redevelopment, hotel interior or a on one off special tree for a private garden.

Susie Sullivan - Client Liaison

Susie’s varied background in administration and marketing across the charity and private sector, places her perfectly for the varied and fast paced workplace that is Tree Research.

She is likely the first person you will speak with when calling the office and supports Charlie in keeping in touch with clients when work takes him away from the office. Susie helps keep moving projects forwards and also coordinates the Tree Research appointments and projects diary.

Anthony Mortimer - External Consultant
Garden designer & Plantsman

Having worked in horticulture for 20 years, Anthony has a broad knowledge of the industry. From studying art at Chelsea School of Art, he diversified into planting design, specialising in topiary and pruning. Having worked as head gardener at varying estates, Anthony moved on to set up his own business Mortimer Landscapes. In conjunction with running this, Anthony works alongside Charlie using his extensive knowledge and skills to design, create and maintain gardens.

Guy Thornton - External Consultant
Landscape Designer

Guy works with Tree Research to design, create and construct truly exceptional gardens and landscapes.

Guy has successfully practiced garden design for over 20 years and has his own company - Guy Thornton Design. Attention to detail and an ability to create timeless and harmonious green spaces positions has placed Guy among the top landscape designers today.

Piers Beeching – External Consultant
Garden Designer

Piers collaborates with Tree Research on projects requiring detailed planting schemes. His flair and floral expertise have been instrumental in creating outstanding designs that thrive perfectly in their environment, whether an urban garden, a rooftop space or a hotel interior.

London based, Piers has his own garden design and maintenance practice and examples of his work can be found on his Instagram page.

John Whitton- External Consultant
Landscape Architect

John is a landscape architect with many years experience, driven by a passion for landscape and garden design.  His strength lies in identifying the essential character and potential of each site. 

He has worked on a wide variety of landscape projects and has
considerable experience of historically and architecturally
sensitive projects.