The Directors of Turnstone Ecology are Tristan Evans, Stephen Wilson and Mark Gash who all have two decades of experience in the ecological consultancy sector.
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Simon Parker is a Principal Ecologist and our bat specialist with experience of large international projects across the world as well as holding Low Impact and Bats in Churches Class Licences.
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Senior Ecologist Gareth Blockley and Ecologist Clare Knight are experienced ecologists with general expertise as well as specialisms in birds and botany respectively and complete our six-person team.
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We are all experienced and committed ecologists and within the company we have an expertise in all protected species and hold Natural England and Natural Resources Wales survey licences for bats, Badger, Dormouse and Great Crested Newts and also regularly obtain development licences for these species. All our staff are responsible for organising survey teams, collection and interpretation of data, report writing and EIA, collision risk modelling and assessment and appropriate assessment with the ultimate aim of providing a professional, pragmatic and price-competitive service from Turnstone Ecology.

Tristan Evans, Principal Consultant

BSc Hons/MSc/MCIEEM – Tristan is a principal consultant at Turnstone Ecology Limited and has over 14 years experience as an ecological consultant. Prior to consultancy he worked within Natural England’s Birds Unit for 2 years, dealing with casework associated with birds and nationally protected areas. Tristan has also gained experience in a wide range of protected species including holding bat, Badger and Great Crested Newt survey/mitigation licences.
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Tristan has a wealth of international ecology experience working on infrastructure, wind and solar energy projects in Africa, Asia, South and Central America, the Middle East and Europe. Tristan has experience of being an Independent Ecological / Ornithological Expert for various international lenders as well as working for project sponsors. Tristan has been responsible for completing scoping studies and detailed fieldwork as well as managing in-country field teams, managing and auditing field data and writing international ESIAs, ESMMP / ESAP documents and, where necessary, Critical Habitat Assessments.
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Tristan also contributed to the 2015 Turnstone Ecology review of the IFC EHS Wind Farm Guidelines.

Stephen Wilson, Principal Consultant

BSc Hons/MCIEEM – Stephen Wilson has worked as an ecological consultant since 2001, planning and undertaking protected species surveys throughout the UK and on projects in Europe, Asia, Africa and Central and South America. Prior to consultancy, he led a team of fieldworkers during a 3-year University of Warwick Bovine TB study and also worked for the RSPB undertaking breeding bird surveys on Salisbury Plain MOD land. As a consultant, Stephen has gained extensive knowledge of protected species survey, reporting, assessment, mitigation and management, particularly in relation to bats, Badgers, Dormice, Otters, Water Voles, Great Crested Newts, reptiles and birds and holds a Low Impact Licence for Great Crested Newts.
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Stephen has a wealth of international ecology experience working on infrastructure, wind and solar energy projects in Africa, Asia, South and Central America, the Middle East and Europe. Stephen regularly works as an Independent Ecological / Ornithological Expert for various international lenders and project sponsors and has been responsible for completing scoping studies and detailed fieldwork as well as managing in-country field teams, managing and auditing field data and writing international ESIAs, ESMMP / ESAP documents and, where necessary, Critical Habitat Assessments. Stephen also contributed to the 2015 review of the IFC EHS Wind Farm Guidelines.

Mark Gash, Principal Consultant

BSc Hons/MCIEEM – Mark is a principal consultant at Turnstone Ecology Limited. He has over 13 years of experience as an ecological consultant prior to which he worked as a countryside manager for 10 years and has proven working experience of conservation and habitat management and restoration of all major habitat types in England.

Mark has a wealth of ecology experience working on housing developments, infrastructure, wind and solar energy projects in the UK, Africa, Asia, South and Central America, the Middle East and Europe. Mark has experience of being an Independent Ecological / Ornithological Expert for various international lenders as well as working for project sponsors. Mark has been responsible for completing scoping studies and detailed fieldwork as well as managing in-country field teams, managing and auditing field data and writing international ESIAs, ESMMP / ESAP documents and, where necessary, Critical Habitat Assessments. Mark has also represented both consultancies and clients at meetings with stakeholders, consultees and members of the public.
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Mark also contributed to the 2015 Turnstone Ecology review of the IFC EHS Wind Farm Guidelines.