Qualifications: BSc (Hons), MCIEEM, FLS, First Aid at Work, CSCS, BORDA offroad
Specialisms: Birds, invertebrates, reptiles, amphibians, collision risk modelling
Licences: Schedule 1 birds, great crested newt

Chris is a respected ornithologist, arachnologist and all-round ecologist, based in Scotland. He has led survey and mitigation for large windfarms, solar parks, power lines, rail, road, housing and minerals projects. Areas of particular expertise include Ecological Impact Assessment, Appropriate Assessment of Natura sites, Collision Risk Modelling (CRM), and ArcGIS data analysis. He has specialist skills in Schedule 1 and Annex I bird species, protected mammals, amphibians, reptiles, and invertebrates (including butterflies, dragonflies, beetles, spiders, harvestmen, pseudoscorpions, woodlice, millipedes and centipedes). He produces bespoke plans for challenging ecological issues, Habitat Management and Monitoring Plans (HMMPs), and ECoW services. He is on numerous committees and steering groups, and a visiting lecturer at the University of the West of Scotland and Glasgow Caledonian University. He holds first aid, CSCS and offroad qualifications.

Scott Armstrong

Ecologist (East Anglia)

Specialisms: Birds, reptiles, amphibians, dormice, mammals

More about Scott Armstrong...

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

More about Dr Chris Gleed-Owen...

Sandi Leiber

Finance & Administration Manager

Specialisms: Business administration and finance

More about Sandi Leiber...

Jess Smith

Associate Ecologist (Southeast)

Specialisms: Reptiles, amphibians, dormice, mammals

More about Jess Smith...

Steve Allen

Associate Ecologist & Arborist (Southeast/East Anglia)

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

More about Steve Allen...

Paul Callister

Associate Ecologist (Northeast)

Specialisms: Climbing, ropework

More about Paul Callister...

Rebecca Perl


Specialisms: Communications, copywriting, editing, marketing

More about Rebecca Perl...

Jonathan Crewe

Associate Ecologist (Southwest)

Specialisms: Bats, badgers, reptiles, amphibians

More about Jonathan Crewe...

Chris Cathrine

Associate Ecologist (Scotland)

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

More about Chris Cathrine...

Noel Bergin

Associate Ecologist & Arborist (Southwest)

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

More about Noel Bergin...

Mike Phillips

Associate Ecologist (Southeast)

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

More about Mike Phillips...

Dr Todd Lewis

Associate Ecologist (Southwest)

Specialisms: Reptiles, amphibians, tropical ecology

More about Dr Todd Lewis...

Ian Bradley

Associate Ecologist (Northeast)

Specialisms: Great crested newt, amphibians, reptiles, badgers

More about Ian Bradley...

Alex Flinn-Shephard

Assistant Ecologist (Midlands)

Specialisms: Biodiversity of farmland

More about Alex Flinn-Shephard...

Katie Warren

Associate Ecologist

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

More about Katie Warren...