Qualifications: BA
Specialisms: Bats
Licences: Bats level 2 class licence
James moved from a career in digital media to work in ecological consultancy in early 2018, and since then has worked intensively to broaden his experience. By January 2020, he had obtained his Natural England level 2 class licence for bats. He has handled all 17* native British bat species (*number of species breeding in the UK at the time of writing). He is a registered bat carer, and has cared for over a hundred bats. He conducts voluntary research on barbastelle and small Myotis bats, checks boxes for the National Nathusius' Pipistrelle Project, and has trapped greater and lesser horseshoe bats. He is based in West Sussex, but operates across southern England for CGO Ecology since he joined us in January 2020.

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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James Mansfield

Ecologist (Southeast)

Specialisms: Bats

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Sandi Leiber

Finance & Administration Manager

Specialisms: Business administration and finance

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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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Habitat Management Team

Habitat Management Team

Specialisms: Heathland, woodland, forestry, habitat management, protected species, invasive species

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Richard Moulds

Associate Ecologist & Arborist (East Midlands)

Specialisms: Trees, Bats

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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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Mike Phillips

Associate Ecologist (Southeast)

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

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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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Katie Warren

Associate Ecologist

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

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