About us

Adam Hollis

Adam Hollis

MSc Arb MICFor CENV F Arbor A

Adam is a Registered Consultant and Fellow of the Arboricultural Association and a Chartered Surveyor, with a Masters Degree in Arboriculture and 30 years’ experience of the landscape and planning industry. He works for London’s top planning consultants, architects and developers, and with local authority tree officers to achieve positive outcomes without unnecessary recourse to expensive appeals. Notwithstanding our preference for negotiated solutions, Adam has not lost at appeal yet.  As a widely recognised,  national expert on  tree valuation, he is  the UK representative to the international Plant Appraisal & Valuation Committee, inaugurated to promote worldwide standards of valuation in arboriculture.

David Gardner

David Gardner

MSc (Hons) MArborA

David is an Arboricultural Consultant with over 15 years experience with a Degree in Countryside Management, Professional Diploma in Arboriculture, and National Diploma in Forestry & Arboriculture. Before joining Landmark Trees, he taught as an Arboricultural Lecturer and Higher Education Course Manager at Warwickshire College.

Gandhali Darvekar

Gandhali Darvekar

M Arch

Gandhali is an LEED AP Architect with 10 years of professional experience in London, New York and India, with a Masters in Environmental Architecture and a Certificate in Construction Project Management. Gandhali has won national design competitions for Eco Designs and has published a number of papers on the subject.

Ross Gamblin

Ross Gamblin

MArborA HND Arb

Ross has 20 years of experience in arboriculture, ranging from tree climbing inspections to large scale tree population surveys; diagnostic / decay detection works and management plans for veteran trees, tree preservation order duties and contract management. He has provided tree-related advice to clients on single tree basement extension projects to schemes in excess of 500 dwellings. He has balanced his career evenly across the public and private sectors, working in East Anglia, the Midlands, Wales, Australia, Indonesia and currently throughout London.

Nicky Hollis

Nicky Hollis

MI Hort HND Hort

Nicky is a Garden Designer and Horticulturalist. She worked for 5 years as gardener for Christopher Gibbs, the antiques dealer and aesthete credited with inventing the Swinging Sixties, of whom founding editor of World of Interiors, Min Hogg, said: “Taste is difficult to define, but his is absolute perfection.” In his much photographed garden at Clifton Hampden, she developed and honed her plant knowledge and horticultural palette. Nicky has also worked as PA to the environmentalist, George Monbiot, as a Horticultural Lecturer at Lackham College in Wiltshire and in procuring and planting large semi mature trees for private clients. Latterly Nicky has worked on numerous planting schemes for planning in St John’s Wood, Hampstead, Highgate, Maida Vale, Kensington & Chelsea for both residential (housing and flat schemes) and corporate projects, including gardens along Hamilton Terrace and The Bishops Avenue.

Ann Currell

Ann Currell

BSc(Hons) DipLP DipArb(RFS) MA MCIHort (Rtd) MRTPI FArborA(Rtd)

Ann recently retired after more than 20 years as a London Borough planning tree officer and has now joined Landmark as an Arboricultural Consultant bringing more than 35 years’ experience of working with trees, plants and landscape in various capacities. She holds a Bachelor of Science Honours degree in Horticulture; a Postgraduate Diploma in Legal Practice; a Professional Diploma in Arboriculture; and a Master of Arts degree in Town Planning.