Qualifications: HND Arboriculture, LANTRA Professional Tree Inspector, NEBOSH, NPTC CS 20, 21, 22, PA1, PA6d, UA 1, 2.1, 5.1, 5.2, 1st Aid, Manual Handling
Specialisms: Trees, Bats
Licences: Class 2 Bat Licence (disturbance by artificial light, endoscope, hand, hand-held static net)

Richard has over 20 years of arboricultural consultancy and management experience, mostly for utility companies in hazardous conditions such as high-voltage overhead lines, motorways, railways and rivers. He is certificated to work beside power lines, to perform arboricultural health and safety surveys, tree inspections, mortgage reports, and arboricultural surveys for development (BS5837:2012). He is a Technician member of the Arboriculture Association. He also has a Class 2 bat licence, with training and experience in advanced survey and handling techniques. He is an active member of local bat groups including Nottinghamshire. He has handled 14 native bat species, with experience of all four Annex 2 species. Richard specialises in surveying trees for bats, combining his arb expertise with aerial (rope-access) training in PRF inspection with endoscope.

Dr Chris Gleed-Owen

Director & Principal Ecologist

Specialisms: Sand lizard, smooth snake, reptiles, GCN, natterjack toad, amphibians, non-marine molluscs, heathland, coastal dunes, biogeography, palaeoecology, palaeontology, geomorphology

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Dan Hawthorn

Principal Ecologist


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Sandi Leiber

Finance & Administration Manager

Specialisms: Business administration and finance

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Scott Armstrong

Ecologist (East Anglia)

Specialisms: Birds, reptiles, amphibians, dormice, mammals

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Jess Smith

Associate Ecologist (Southeast)

Specialisms: Reptiles, amphibians, dormice, mammals

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Steve Allen

Associate Ecologist & Arborist (Southeast/East Anglia)

Specialisms: Trees, Bats, Woodland, Fencing, Barn owl

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Paul Callister

Associate Ecologist (Northeast)

Specialisms: Climbing, ropework

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Rebecca Perl


Specialisms: Communications, copywriting, editing, marketing

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Jonathan Crewe

Associate Ecologist (Southwest)

Specialisms: Bats, badgers, reptiles, amphibians

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Chris Cathrine

Associate Ecologist (Scotland)

Specialisms: Birds, invertebrates, reptiles, amphibians, collision risk modelling

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Noel Bergin

Associate Ecologist & Arborist (Southwest)

Specialisms: Bats, hazel dormouse, reptiles, heathland, woodland, trees, health & safety

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Katie Warren

Associate Ecologist

Specialisms: Barn owl, bats, reptiles, GCN, dormouse

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Dr Todd Lewis

Associate Ecologist (Southwest)

Specialisms: Reptiles, amphibians, tropical ecology

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Ian Bradley

Associate Ecologist (Northeast)

Specialisms: Great crested newt, amphibians, reptiles, badgers

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Alex Flinn-Shephard

Assistant Ecologist (Midlands)

Specialisms: Biodiversity of farmland

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Mike Phillips

Associate Ecologist (Southeast)

Specialisms: GCN, reptiles, GIS/remote sensing, tree/habitat management.

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