The directors of Mason Navarro Pledge

Mason Navarro Pledge; consulting civil and structural engineers delivering new and refurbished buildings across every sector with innovation and sustainability at our heart.

MNP was founded in 1999 by David Mason, Frank Navarro and Stuart Pledge. We are a privately owned, independent consultancy that employs over 50 civil and structural engineers and technicians in Hitchin, London and Manchester. Our open, approachable culture is fundamental to how we work. We put a huge emphasis on maintaining a talented and enthusiastic team who are technically adept engineers, and also great to work with. Our Director team offer exceptionally strong leadership and a hands on approach to project delivery.

We are creative and passionate, and our ethos is to deliver new and refurbished buildings across every sector innovatively and sustainably. Our research and development group, MNP Advantage, helps us focus on construction solutions to drive carbon reduction across our work. We are involved in projects which vary in scale from under £1m to over £250m. These range from new commercial, retail and residential projects to the intricate modification and preservation of existing structures, which requires a highly forensic approach.

Our work includes the investigation of damaged and dangerous structures following accidental events such as vehicle impact, misuse or fire.

By identifying opportunities and solutions, we carefully balance creative and commercial needs. Collaborating with our clients, we maximise space and flexibility ensuring the longevity of a building.

Our Expertise

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Urban Regeneration

From the conception of regeneration projects we collaborate with all stakeholders and are able to provide key civil and structural engineering advice through all stages of development.


New Build

We deliver building solutions for basements, low and high rise structures embracing traditional methods, prefabrication and modern methods of construction.

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Our practice was largely built on the extension, alteration and modification of existing structures including ‘cut and carve’ engineering. This is especially relevant when we are striving for sustainable construction to reduce carbon emissions.

Superbloom Nest


Our specialist team of conservation engineers have many years experience working on Listed Structures and Buildings of Historic importance ranging from individual statues to Royal Palaces. We employ tried and tested methods supplemented with state of the art techniques.

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Civil Engineering

Our civil engineering team advise on 3D ground modelling, cut and fill analysis, below ground drainage and pavement design across a broad range of projects from pre-planning to completion.

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Flood Engineering

We provide expert assessment and advice be it Sustainable Urban Drainage Systems, flood risk analysis, surface water attenuation or support with statutory authorities and planning applications.

Our Portfolio

Meet Our Team

Career Opportunities

Keep an eye on this page for our latest vacancies, or contact for more details.

You can also engage with us via our social media channels.

We are Hiring

Civil & Structural Engineers (all levels)
REVIT & BIM Technicians
Student Placements