Expert Team

“Gabrielle’s experience working on large-scale projects in the infrastructure, renewable energy and housing development markets comes from an extensive career in the ecology sector. She holds a Level 2 Bat Class Survey licence and has been the named ecologist on a mitigation licence. Gabrielle has also undertaken Habitat Regulations Assessments for a number of sites in the Thames Basin Heaths Special Protection Area (SPA); Ecological Impact Assessments for a number of housing developments, overhead powerlines and wind farm developments and protected species surveys. Gabrielle has managed multi-disciplinary teams of ecologists on a number of large infrastructure projects including East West Rail and underground power cables. When not working, which does occasionally happen, Gabrielle enjoys exploring the Surrey hills (and pubs!).”


Gabrielle Graham, BSc MSc MCIEEM CEcol, Managing Director

“Claire has had a lifelong interest and appreciation of the natural world. She is an experienced ecologist having worked for over 18 years in the conservation sector, mainly based in Surrey. She has a first class degree in Ecology and Conservation, a Masters in Environmental Management and is a full member of the Chartered Institute of Ecology and Environmental Management.
Claire is experienced in undertaking Preliminary Ecological Appraisals and habitat surveys with many years of undertaking surveys of Local Wildlife Sites for Local Authorities. She has particular expertise in the production of conservation management plans for a variety of different clients and is a certified auditor for the Biodiversity Benchmark scheme coordinated by the Wildlife Trusts.
In her spare time Claire loves exploring the outdoors with her family and inspiring the next generation of young ecologists by volunteering with her local Beaver Scout group.”


Claire Gibbs, BSc MICEEM, Senior Ecologist

“Isobel is a passionate and highly experienced botanist who has worked as an ecologist in Surrey for over 20 years. During this time she has provided a wide variety of bespoke habitat management plans, ecological surveys and advice to both private and public sector clients on a wide range of projects across a diverse number of habitats, often heading up a multi-disciplinary team of ecologists. Highly motivated she is keen to promote positive conservation by passing on her extensive botanical knowledge to others through a range of training opportunities. Her favourite place is outdoors whether for work or on a volunteer basis with Surrey Botanical Society, Hampshire Flora Group and Alton Natural History Society.”


Isobel Girvan, BSc MCIEEM, Principal Ecologist
“Rob has worked in ecological consultancy since 2012 and joined Surrey Wildlife Trust Ecology Services in February 2019. His role includes project management, preparation of tenders and quotations, planning and undertaking protected species surveys, extended Phase 1 habitat surveys and producing technical reports and management plans.
Rob has a particular fascination with reptiles, along with strong interests with amphibians, riparian mammals and birds. He holds protected species survey licences for great crested newt, sand lizard, smooth snake and water vole, and is a committed volunteer with the Surrey Amphibian and Reptile Group. Outside of the office, Rob is usually either running, thinking about running or watching county cricket.”

Rob Hutchinson, BSc (Hons) MSc MCIEEM , Senior Ecologist

“ Lorraine has been working in ecological consultancy since 2003, having also worked in the conservation sector.  Lorraine specialises in protected species and over the last year has been providing expert support to Kier Infrastructure on the M23 smart motorway project. 


Lorraine Parish, BSc MSc MCIEEM, Senior Ecologist

“Jamel has been fascinated by the natural world for many years and has a keen interest in herpetology. He studied Zoology with Animal Ecology at the University of Wales, Bangor and graduated with first class honours in 2005. Following this he has nearly ten years of countryside management experience on a variety of habitats including ancient woodland, lowland heathland, and wetland.
Dedicated and highly motivated, Jamel has experience of carrying out surveys and writing reports for Preliminary Ecological Appraisals, site management plans, specialist amphibian and reptile surveys and assisting with bat surveys. As an improving botanist he is a member of the Surrey Botanical Society and holds a committee position within the Surrey Amphibian and Reptile Group managing the reptile survey and monitoring effort across Surrey. Jamel holds an exemption licence covering the rare reptile species and a class licence for great crested newt survey work. Outside of work he juggles family life with voluntary roles and an interest in photography.


Jamel Guenioui, BSc, Ecologist

“Harriet has always been interested in working with animals. Through her studies of Biology at the University of Sheffield, she sparked her interest in the ecology sector when she planned and conducted a reptile survey for her degree at one of the Surrey Wildlife Trust sites. She joined the Ecology Services team in 2018, and is now an Assistant Ecologist who is confident in carrying out and assisting with surveys of protected species such as bats, badgers, birds, reptiles and great crested newts. She also has experience working on highways infrastructure projects as an Ecological Clerk of Works and an accredited agent under dormouse and great crested newt mitigation licences, in addition to writing reports on our suite of ecological surveys.
In her spare time, she can be most often be found walking around the Surrey landscapes with a camera or binoculars, looking for wildlife”


Harriet Fisher, BSc (Hons), Assistant Ecologist
“Jenny has always loved wildlife she she can remember, however she has joined the Ecology Services team through a slightly unconventional route. First completing her Masters in Chemistry at Durham in 2014, her passion for all things wild (particularly invertebrates) brought her to Imperial College, where she graduated her MSc in Ecology, Evolution and Conservation with Distinction.
With a background covering multiple disciplines, Jenny has experience across a wide range of roles. Although at the start of her ecological career, she is skilled in Bat, Great Crested Newt and Reptile surveys, and has gained skills in Ecological Clerk of Works as well as Badger surveying and sett closures. Jenny is currently expanding her invertebrate knowledge (particularly butterflies and spiders) and is aiming to gain a class licence for Great Crested Newt in the near future. Outside of work, she likes arts and crafts, and is inspired by the wildlife around her.”

Jenny Dawson, MChem MSc, Assistant Ecologist
“ Marc is a passionate ecologist and has been working as a consultant since 2012. Marc has a broad knowledge covering all aspects relating to ecological consultancy. He also specialises in birds and bats and has designed numerous survey techniques and mitigation for these species’ groups for large and small scale projects. Marc holds protected species licences for barn owl, bats, great crested newts and also holds a permit for tree climbing and operating a Mobile Elevated Working Platforms (MEWP).”

Marc Anderton, BSc (Hons) MSc, Senior Ecologist

SWT Ecology Services’ pragmatic advice has been much appreciated and their recommendations not onerous for us to fulfil. This has been invaluable for us to deliver our portfolio of projects!

Peter Walsh, Senior Development Manager, McCarthy & Stone