Technical Expertise

Multidisciplinary teams comprising of specialists across ten industry sectors, we have the expertise necessary to grapple with challenging assignments.

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Commitment to Clients

Our business is built on relationships, and our clients will always be our top priority.

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Featured Project

Silvertown Tunnel London UK

Silvertown Tunnel
One of the largest engineering projects in the world.

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Who We Are

International Award-Winning Engineering Consultants who deliver ground breaking solutions at the forefront of industry best practice.

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Our Regions

Carbon Reduction Plan

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Our Commitment to Net Zero
Ayesa is committed to becoming a net zero engineering consultancy by 2040

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Stay Up-to-date

Stay on top of the latest developments, appointments, awards and more across all our offices.

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Featured News

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On 19th October 2023, ByrneLooby will rebrand to Ayesa

ByrneLooby will officially adopt the name of its parent company, Ayesa, a global engineering and technology services provider.

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Investing In Our People

Cultivating a culture in which individual differences and the contributions of our staff are recognised and valued.

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Our EDI Policy

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Celebrating People
Fostering a culture where you are encouraged to be yourself.

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International Presence

Multidisciplinary team comprising of specialists across Ireland, UK and the Middle East.

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Land Quality & Regeneration

Sustainable Development and Brownfield Site Regeneration

We offer a fully integrated geotechnical and environmental consultancy, providing a wide range of services from initial feasibility studies and investigations to the design, management, supervision and validation of remediation projects. With expertise in a range of disciplines, our geo-environmental staff work together to assess the natural and anthropogenic issues relating to site conditions within the context of a proposed or existing development.

Contaminated Land Consultants
With over 20 years in the contained land sector, Ayesa has extensive experience in providing practical solutions to our client's brownfield site issues. Developers of brownfield sites across the UK face the challenges of an industrial legacy and our aim is to adopt a collaborative approach with clients to understand the feasibility, opportunities and constraints in relation to the regeneration of a brownfield site.  Contaminated Land is a field with strict legislative standards and we assist with initial site appraisals to master planning to optimise land value and discharging planning conditions.

Advice Across all Stages of Brownfield site projects
Our technical advice, risk assessment and appropriate mitigation can help you find a cost-effective and safe solution that meets statutory requirements. We assist developers to resolve the contamination issues that increase risks and add uncertainty to programme, costs and schedules. Our teams have delivered services at every stage of contaminated land management from initial due diligence and desk study through to investigation, risk assessment, remediation and post-completion monitoring. Our team understands the regulatory frameworks surrounding contaminated land and land quality issues in different jurisdictions. We take a pro-active approach working with regulators to achieve solutions that satisfy legal requirements while minimising delays to development projects.

Our consultants are adept in the preparation and completion of Conceptual Site Models (CSMs), undertaking environmental risk assessments following the source, pathway, receptor model and developing remedial options.  With an excellent working knowledge of the planning regime and contaminated land legislation, our team are able to provide guidance and support to clients through all aspects of development from the pre-planning stage through to the discharge of planning conditions.

Large and Small Brownfield Projects
Our consultants have a wide range of experiences from small scale residential developments through to large-scale commercial and industrial projects. In partnership with experienced contractors, we deliver a fully coordinated ground investigation, remediation or earthworks programme to comply with regulatory requirements in both the planning and legislative frameworks. When you work with Ayesa, we combine our geo-environmental, geotechnical, environmental and structural engineering services to deliver an integrated cost-effective approach with a lens on sustainability.


Expertise In-Depth:

• Environmental searches
• Geological searches
• Historical searches
• Hydrogeological searches
• Mining searches
• Phase 1 desk study reports
• Site appraisal
• Site walkover
• Land quality assessment

• Chemical testing
• Cable percussive boreholes
• Rotary boreholes
• Trial pits
• Window sampling
• Geotechnical and geo-environmental testing
• Generic human health and controlled waters risk assessments
• Detailed quantitative Risk Assessments (DQRA) for human health and controlled waters, using a range of risk assessment modelling tools
• Design, validation and management of remedial schemes
• Ground gas risk assessments
• Groundwater and interpretative reporting
• Options appraisals, working drawings and contract documents

• Contract management
• Design, validation and management of remedial schemes
• Expert witness
• Earthwork’s sampling and testing 
• Inspection and approval of all formations and geotextile separator layers
• Inspection and approval of finished levels and layers
• Monitoring
• Options appraisals, working drawings and contract documents 
• Quantities estimation
• Regulatory liaison and negotiation
• Supervision
• Soil stabilisation solutions and trials
• Validation CQA consultant

• Environmental Impact Assessments (EIA)
• Contaminated land assessment
• Ground gas monitoring & soil vapour surveys
• Groundwater monitoring and sampling
• Hydrogeological studies
• Human health risk assessment
• Detailed Quantitative Risk Assessments (DQRA) for controlled waters using a range of risk assessment modelling tools

• Material management plans
• Detailed construction quality plan
• CL:AIRE Definition of Waste Code of Practice
• CL:AIRE CoP Qualified Person
• Waste characterisation (Hazardous Waste)
• Environmental permitting
• Expert witness

• Design and specification of foundations
• Design and specification of ground improvement measures
• Design of slopes in soil and rock
• Design of retaining structures
• Design and supervision of earthworks
• Design and installation supervision of geosynthetic materials
• Materials testing and evaluation
• Project management


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Our goal is to provide you with the best services for your needs