Our team

We are an international consultancy headquartered in London, with operational bases in Cologne, Amsterdam, Paris, Madrid and Lisbon.

We also have partnership agreements with specialist consultancies worldwide. All of our projects are completed 'in-territory', either through our local offices or trusted partnership network. This means unparalleled local experience, knowledge and relationships.


Allan Resize

Allan Busse

Managing Partner

Allan founded Ambiente International LLP in July 2005. He’s a geologist with a Masters Degree from the Aachen Institute of Technology in Germany and a 22 year history in environmental consultancy throughout Europe, Asia, Africa and the Americas.

Allan has participated in over 1000 Environmental Assessment and Compliance projects world-wide. He has extensive experience in both transaction support services and environmental health & safety management systems.

As leader of Ambiente, Allan focuses primarily on business and product development. He also regularly takes a Project Director role and continues to maintain a keen interest in all of our company projects.

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Inga Kooij


Inga joined Ambiente as Commercial Manager in April 2006. She has over 12 years of experience in environmental consultancy with a background in land quality assessment, compliance auditing, environmental due diligence and risk assessment.

Inga is responsible for overseeing our environmental due diligence service and forms part of our central project team, managing a high volume of environmental assessment and due diligence projects throughout Europe and further afield. Inga specialises in providing tailored environmental risk evaluation advice and pragmatic commercial management solutions.

With an eye for detail and a commercial focus, Inga also undertakes a crucial quality assurance role within Ambiente. She is responsible for ensuring that our high standards and consistency in reporting are maintained across every project.

Photo of Sarah Pirrie

Sarah Pirrie


Sarah joined Ambiente in August 2005 and is our Technical Manager. Sarah has over 10 years' experience in the fields of environmental due diligence, site assessment (including ASTM Phase 1 auditing and reporting), property management, and permitting.

Within our central project team Sarah works alongside Inga Kooij and Emma Corden. Her key areas of focus include the management of site assessment and due diligence projects for our commercial / private sector and US clients and co-ordination of selected UK and European environmental property management programmes.

Sarah specialises in technical reporting, operational compliance and risk assessment. Another part of her role is to keep the group up to date with key environmental legislative changes.

Emma Corden

Principal Consultant

Emma joined Ambiente in September 2012 and has over 10 years' experience in the fields of environmental due diligence, environmental compliance and contaminated land assessment. She is a seasoned project manager and highly skilled environmental auditor, well practiced in identifying legal non-compliances and working with companies to address environmental best practice and liability issues.

Emma’s primary role is to manage Ambiente’s Environmental Property Management service; her interaction with a wide variety of clients and auditing experience across numerous industry sectors make her ideal for training new members of staff and partner contractors.

Julie Carter

Principal Consultant

Julie joined Ambiente in March 2014 to assist in the London central project team and manage Ambiente’s international Environmental Property Management service.

Julie has twenty years of project management and environmental consultancy experience, primarily in the fields of environmental due diligence, environmental compliance and contaminated land risk assessment and remediation.

She is a Chartered Environmentalist, an experienced team leader and an environmental auditor with a strong track record of delivering innovative due diligence solutions.

Oliver Funnell

Senior Consultant

Oliver joined Ambiente in August 2012 as a Junior Consultant. He holds a Degree in Environmental Geography and a Masters in Environmental Monitoring, Modelling and Management from Kings College London. Ollie’s key role within Ambiente is to assist the UK team in undertaking environmental due diligence assessments and property management reviews.

Sarah Skinner

Office Manager

Sarah joined Ambiente in April 2016. She holds a degree in law and has several years’ experience as a senior administrator in a number of different fields. Sarah’s main responsibilities are ensuring the smooth running of the London office, including the administration of contracts and invoices, and acting as point of contact for all general enquiries. She also acts as a team PA to her colleagues in London.


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Carmen Dahl

Managing Director

Carmen joined Ambiente Deutschland GmbH in July 2006 and accepted the role of Managing Director in January 2008. Carmen is a specialist Geologist with a Masters Degree from the Aachen Institute of Technology in Germany. With over 25 years experience in the environmental sector, she’s an invaluable member of our leadership team.

Carmen has expert knowledge for working techniques in contaminated areas and has a solid background in hydro-geological surveying and in the design & implementation of intrusive site investigations and remediation strategies. Since 2006 she has specialized in environmental compliance and due diligence auditing. Her extensive capabilities, including expert knowledge for asbestos surveys, enable Carmen to offer a wide range of property advisory services for the real estate industry.

As one of Ambiente's most experienced members, Carmen keeps our German team focused during high volume and tight deadline transaction projects, ensuring we always deliver to the highest standard.

Patric Hecker

Senior Consultant

Patric joined Ambiente Deutschland GmbH in January 2007 as a Senior Consultant. He holds a Masters Degree in Geology from Cologne University and has over 15 years' experience in contaminated land assessment and environmental transaction support services.

Patric’s ability to forge close working relationships with clients and property managers is instrumental in ensuring the improved environmental performance of assets in our environmental property management (EPM) programmes. He co-ordinates our EPM programme in Germany and regularly undertakes environmental due diligence assessments for the retail, logistics and office sectors.

Patric also brings an additional skill set to the team, which has enabled Ambiente to extend our services. He is a qualified Asbestos Surveyor and provides expert knowledge for work in contaminated areas and for protection of waters. Patric also has up to date knowledge of environmental legislation and their implementation, such as the preparation of Energy Performance Certificates.

Vera Koss


Vera joined Ambiente Deutschland GmbH in January 2013 as a Junior Consultant. She holds a Masters Degree in Geosciences from Bonn University with expertise in the fields of hydrogeochemistry and environmental chemistry. Vera’s key role is to support the German team with undertaking contaminated land and environmental due diligence assessments. In order to cover a broader range of services she extended her qualifications to the status of Asbestos surveyor.

Martin Heslop

Junior Consultant

Martin joined Ambiente Deutschland GmbH in January 2016 as a Junior Consultant. He holds a Masters Degree in Geoscience from the Aachen Institute of Technology and complements the team with further expertise in the fields of environmental management and contaminated land issues. Martin’s key role is to support the German team with undertaking contaminated land and environmental due diligence assessments.

Dominic Ludlow

Junior Consultant

Dominic joined Ambiente Deutschland GmbH in June 2017 as a Junior Consultant. He holds a Master’s Degree in Geosciences from Bonn University with expertise in the fields of environmental geology and hydrogeology. Dominic’s key role is to support the German team with undertaking environmental due diligence and environmental risk management (ERM) assessments.


Rik Stikker


Rik is our associate in the Netherlands. He has a degree in Physical Geography from the University of Amsterdam and over 20 years' experience in contaminated land assessment, intrusive site investigations and remediation, and geotechnical investigations.

Rik has a pragmatic view of environmental risk and has particular expertise in the delivery of cost effective investigation strategies and remediation solutions. He works in line with local practices and has developed an excellent relationship with the Dutch regulatory bodies.


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Béatrice Abribat Brun


Béatrice is our Associate in Paris. She holds degrees in Geography and Geology and has a Masters Degree in Waste and Pollution Management from the University of La Mans. Béatrice has 12 years' experience in the environmental sector with a background in environmental due diligence, contaminated land and environmental site investigation, and environmental permitting. Her extensive knowledge of France's complicated environmental permitting system makes her an excellent auditor and skilled at identifying legal non-compliances and potential liability issues.


Photo of Almudena Thomas-Vela

Almudena Thomas-Vela


Almudena is our associate in Madrid. She has 10 years' experience in environmental consultancy, specialising in contaminated land, due diligence assessments and environmental property management. Almudena’s many languages and great organisational skills make her an invaluable member of the team.


António Romão


António is our associate in Portugal, working closely with our office in Madrid and London. He has over 28 years’ experience in environmental consultancy covering a wide range of projects for difference sectors internationally, with a strong focus in Portugal, Mozambique, Cabo Verde and Angola. His main areas of speciality are environmental due diligence and environmental and social assessment and management (including compliance with the safeguard policies of international financial institutions). He also has extensive experience in the coordination of multidisciplinary, international teams.

Join our team

Ambiente is a thriving European consultancy. We have global coverage, but we're still proud of our 'local firm' feel. We encourage everyone to contribute at high levels, and are committed to developing, retaining and rewarding our staff.

We are currently looking for Environmental Auditors based in The Netherlands. If you are a motivated individual with good English report writing skills, and would like to join our select team, please email Sarah Skinner with your CV and a one page covering letter outlining your experience to date. The ideal candidate will have at least two years experience in a similar role.

Email Sarah Skinner at sarah.skinner@ambientellp.com