Who we are

Johns Associates was set up as an environmental consultancy in 2007 and has grown organically from a team of two into a vibrant, multi-disciplinary organisation with a global perspective.  Our head office is located in Bradford on Avon, UK.

We’re a diverse and growing group of motivated, highly skilled professionals with a substantial depth of experience across different environmental and social disciplines. We invest heavily in our people through training and professional development. As a company we’ve attained a wide range of accreditations and won environmental awards for our work. This is supported through the use of cutting edge technology and a can-do attitude. Johns Associates and its team have a range of professional accreditations and memberships that demonstrate our accountability and the professionalism of our work.

We work pragmatically to find the most effective solution for you and your project and our approach is based on the understanding that capable, happy, well supported staff work well with you and deliver high quality work.

The whole company engages in activities that benefit our local environment and community. That extends our positive influence beyond our commercial work. Have a look at our news page for more on our latest pro-bono and voluntary projects.

We’ve recently been awarded the Investors in People Gold Level Accreditation and won the ICE Environment and Sustainability Award in 2013.

If you’re interested in joining the team, click here to see our current vacancies.


Matt is co-founder and Director of Johns Associates. He provides leadership and steers the commercial direction of the company as well as undertaking a range of technical work. He has a background in earth science and geography, aquatic resources, impact and risk assessment and ecology.

Matt has a strong understanding of environmental legislation and policy and how organisations and projects can respond to various environmental challenges and be successful while delivering environmental benefits. He is passionate about good environmental design that delivers multiple benefits.

Matt is the Director responsible for the Planning and Impact Assessment, Landscape, Water, GIS, Fisheries, Contracting and Outdoor Fitness teams within the company.

Prior to Johns Associates, Matt worked for Entec (now AMEC) and APEM, with broader experience gained from glacial research in the Alps, the Royal Naval Reserve, a local Parish Council, Chartered Institute of Water and Environmental Management, Golf Environment Organisation and various academic institutes.

He is married, has three children and a dog and is currently mid-way through a series of four mountain marathons in the Brecon Beacons and the Black Mountains.

Liz Johns, BSc MSc CEnv MCIEEM

Liz is co-founder and Director of Johns Associates and has led the company from its inception.

Liz has a strong background in environmental biology, aquatic resource management, ecology, (both terrestrial and aquatic) and impact assessment.  She is the Director responsible for the Ecology team as well as Finance, HR, Communication and our Infrastructure.

Away from her technical work, she oversees the financial direction and day-to-day management of the company.  Prior to Johns Associates, Liz worked for the Environment Agency, Mersey Basin Campaign, Hyder Consulting and Nicholas Pearson Associates.  She is able to combine her understanding of environmental regulation with the commercial needs of our clients to ensure Johns Associates delivers robust and efficient services.

She is married with three children, a black labrador and a leopard gecko called Jeff.

Ben Mitchell, BSc (Hons) MCIEEM

Ben Mitchell is Principal Ecologist and manages our junior ecology staff as well as his own portfolio of projects.  He has over 14 years experience working in the professional consultancy and nature conservation sectors both within the UK and internationally.  Ben holds several EPS licenses in England, Scotland and Wales including bat survey and mitigation licences, great crested newt, schedule 1 bird and natterjack toad. He is an experienced tree climber and has inspected over 400 trees for bat roosts for several large infrastructure projects. He has extensive experience in surveying a range of protected and notable species, including mammals, reptiles, amphibians as well as undertaking specialist bird surveys.

Ben has a good working knowledge of current UK and European legislation and the planning process and experience in compiling targeted mitigation strategies for a range of protected species. He has a strong record of project management from managing complex, nationally important conservation projects, to delivering infrastructure scale ecological surveys for major international engineering companies. He has managed bat licence applications and the delivery of licence conditions for a number of projects from small developments to larger developments containing roosts of multiple species.

Ben is an active member of the Wiltshire Bat Group and currently runs a bat monitoring project at Langford Lakes Wiltshire Wildlife Trust reserve.

Joanne Stokes

Jo is the Finance Manager at Johns Associates. As a qualified accounts technician, she brings a strong background of finance and office administration to the operations of the company, which she has gained from working in the UK and Gibraltar, and from ACCA qualifications. Jo is a member of the Senior Management Team.

Having completed Health and Safety Management training, she achieved our CHAS certification and proactively promotes a ‘be safe out there’ approach to keep us all health and safety conscious, and Johns Associates up to date with health and safety compliance.

Jo is keen to embrace challenges and is currently learning Mandarin Chinese.

Kerry White, BSc (Hons) Grad CIEEM

Kerry holds two protected species licences to survey in England and joined Johns Associates in January 2018 as an Assistant Ecologist. After completing a BSc (Hons) Ecology of Wildlife Conservation in 2013, Kerry joined the conservation placement scheme with Avon Wildlife Trust and gained experience in all aspects of wildlife conservation including species surveying and practical habitat management. Following this, she spent two field seasons working for Bristol University as a research assistant and two field seasons with a local Ecological Consultancy where she gained valuable experience in protected species surveying.

In her spare time Kerry enjoys exploring new places in her campervan and assisting with a number of national species monitoring programmes.

Lis Weidt, BSc (Hons) Grad CIEEM

Lis is a Senior Ecologist and holds a number of protected species licenses to survey in England and Wales.  She joined Johns Associates in November 2015 and has various experience in surveying for bats including building inspections, activity surveys and radio tracking a number of different species. She has taken on a wide range of schemes, which require ecological input, from residential developments, recycling centre facilities and military buildings.

Lis has experience in site and environmental appraisals, ecological assessments, ecological clerk of works and protected species surveys particularly for bats and dormice.

In her spare time Lis is an active member of the Wiltshire Bat Group and the Wiltshire Mammal Group and can be regularly found in the woods of Wiltshire surveying for bats, dormice and other species of interest.

Mari Webster, BSc MA MRTPI

Mari has over 15 years of planning experience in both the public and private sectors. She has managed projects and determined applications relating to major EIA schemes including mineral extraction and subsequent restoration schemes, new school and Academy developments, strategic waste management facilities, renewables and waterfront development. She has also been involved in the formulation of planning policy and led public consultation events and liaison committees.

Mari is a chartered member of the Royal Town Planning Institute (RTPI) and has also been a regular on the judging panel for the Civic Trust Awards.

She is married, has two children and an ever-shedding Labrador and also enjoys singing with local groups in her spare time.

Mark Sherlock

Mark joined Johns Associates in January 2016, as a member of our contracting team. He has been working in the tree industry since he qualified in woodland estate management back in 1992, and before he joined us, was running his own small business and subcontracting for other tree companies.

Mark has all the relevant NPTC chainsaw qualifications and worked for a year out in Australia back in 1995. His knowledge of trees and tree management, along with his very keen interest in wildlife conservation, is a very valuable asset to the Johns Associates contracting team.

Matt Maynard, BSc (Hons) PGDip

Matt is our GIS Consultant and has seven years experience working to find innovative solutions to technical problems in environmental and planning projects.  His projects have included phosphate discharge modelling in the Hampshire Avon, drone based habitat mapping, site habitat and risk assessment.

Prior to joining Johns Associates, Matt worked at Wiltshire Council with the planning, ecology and landscape teams.  He was responsible for the SHELAA update and the upkeep of  housing monitoring systems.  Matt is currently working towards an MSc in Urban Planning.