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

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

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

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

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

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Whinney Hill Landfill

Whinney Hill Landfill

Whinney Hill Landfill is a 45-metre-deep hard rock quarry with over 15 million m³ of void space. Extensive remediation works were required as the previous site was used for industrial and hazardous waste disposal, with associated leachate treatment and landfill gas utilisation plant also on the site. 300,000m³ of waste was excavated and a 40m high engineered separation bund was constructed, in addition to four new landfill cells being designed.

Whinney Hill Landfill

Our Role

Ayesa has been providing construction support to Suez at their regional Whinney Hill landfill facility for over 20 years.

Our team provided construction support on multiple new landfill cells, a 40-metre high separation bund and over 15 hectares of capping works. The landfill is lined with a composite mineral clay / GCL / HPDE liner and a basal leachate drainage and collection system.


For each new cell construction and post infill capping contract we have assisted the operator to procure the contract and supervised the works. This starts with the detailed design, securing approval from the regulator (UK Environment Agency), preparing the contract specification and issuing the tender pack to contactors. We then supported our client through the tender evaluation process, contractor appointment, management of the contract works and by providing site-based supervision of the works. On completion of the works, we provided the regulator with the necessary CQA verification report.

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