McFadden Utilities is a groundworks and civil engineering contractor based in Hertfordshire, delivering the full scope of ground preparation, excavation, and civils work across London and the South East. Typical jobs include site clearance and enabling works, trenching for utility routes, excavation for foundations and structures, drainage installation, concrete bases for infrastructure, and the full reinstatement that finishes each job. Commercial and utility-scale work is the core of the business, with the accreditations and track record to match.
Groundworks is a broad term that covers everything done to prepare a site for what’s being built on it. Before the walls go up or the utility goes in, someone has to clear the site, excavate to the right levels, install the underground services, lay the drainage, pour the foundations, and get the ground ready for the surface layers above. Get that right, and everything built on top lasts. Get it wrong, and the problems come back within a year.
McFadden’s groundworks work covers four broad categories. Site clearance and enabling works: the preparation phase before construction starts, including vegetation clearance, existing surface breakout, and site setup. Excavation and trenching: bulk earthworks, utility routes, chamber excavation, and drainage runs. Foundations and structures: concrete bases for substations and kiosks, chamber bases, joint bays, drainage structures, and other utility infrastructure foundations. Drainage and reinstatement: the services that run through the ground after excavation, and the surface works that put everything back above ground. Each category uses its own teams, plant, and accreditations.
Groundworks is the bit nobody sees once the job's done, but it's where most of the work goes in. If the ground isn't right, nothing above it will be. We've been doing this since 1980 and the principles haven't changed — just the kit we use.
Paul McFadden, Director
Utility-industry groundworks is where McFadden specialises most deeply. WIRS and NERS accreditation allow direct delivery of water and electric utility works including trenching for mains and ducting, foundations for substations and kiosks, chamber construction for valves and flow meters, and joint bay installation for electrical connections. The accreditation stack also covers ISO 9001, ISO 14001, ISO 45001, Constructionline Gold, Achilles, and SSIP SMAS Worksafe — the credentials that major clients and frameworks check before appointing a groundworks contractor.
Commercial groundworks outside utility infrastructure is also well-served by the same teams. New build foundations, car park sub-bases, drainage runs for commercial sites, access road construction, and hard-landscaping groundworks are all delivered under the same operational standards. For residential-scale jobs, the teams apply the same methodology — the scale changes, the standards don’t.
Grab lorry fleet, excavation plant, and hand-lay crews work from the Hertfordshire depot as standard, with coverage across London and the wider South East. Larger schemes and framework contracts take teams further afield. 24/7 emergency response is available for existing contract clients where groundworks support is needed alongside reactive work.
A groundworks job runs in four phases, regardless of scale. A single drainage run follows the same method as a full site's civils package — the difference is the size of the crew and the time on site.
A walk of the site, review of drawings and specification, confirmation of what needs to happen underground and at ground level, and a quote back with a method statement and programme for anything beyond smaller works.
Permits, traffic management where public highway is affected, site setup with welfare and safety provisions, vegetation clearance or surface breakout, and preparation of the site for excavation to begin.
Bulk earthworks, trenching for utilities, chamber and joint bay construction, drainage installation, and foundation pours as specified. Every phase compacted and inspected before the next layer goes on.
Sub-base preparation, surface reinstatement to NRSWA or client specification, final inspection, photos and as-built records for the client's file, and site handed back clean.
Three projects showing the range of McFadden's groundworks scope: access road replacement on a strategic treatment site, multi-discipline civils at a booster station, and deep excavation on a 1200mm strategic main. More groundworks-led case studies are being added as schemes complete.
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Replacement Ekki hardwood bog mat access road at an 18 ML/D strategic treatment works. Specialist lifting with Hiab crane. Observed and praised by Affinity's senior project management team on site.
Multi-discipline civils at Swanley booster station: pipe laying, flow meter install, ducting, and generator kiosk base. Seven work packages sequenced and delivered across one site.
Leak on a 1200mm GRP strategic main within a live treatment site. 6-metre excavation depth. 5-metre repair section cut out and replaced in challenging conditions.
Groundworks teams work from the Hertfordshire depot, covering London and the wider South East as standard. The six-county core service area is where most jobs get delivered, with larger schemes and framework contracts taking teams further afield.
The questions we hear most about groundworks and civil engineering work.
Groundworks covers everything done to prepare a site before building starts, and everything underground that supports what’s built above. That includes site clearance and enabling works, bulk earthworks and excavation, trenching for utility routes, chamber and joint bay construction, drainage installation, foundation pours, sub-base preparation, backfill and compaction, and surface reinstatement. Done well, nothing above ground fails because of what’s below it. Done badly, surfaces sink, drainage backs up, and the client pays to have the work redone.
McFadden handles groundworks across utility infrastructure (water mains, electric ducting, substations, chambers), commercial sites (car parks, access roads, drainage runs, hard-landscaping bases), and residential-scale work where the specification suits the teams. Typical clients include water companies, Tier 1 civils contractors, property developers, main contractors, and smaller commercial clients. Job sizes range from a single trench run through to full site groundworks packages.
Groundworks is the phase before and during excavation: site clearance, excavation, trenching, foundations, drainage, underground services. Reinstatement is the phase after: putting the ground and surface back together once the underground work is done. The same teams often deliver both sides on the same job. McFadden has a separate reinstatement page covering the surface restoration side specifically.
Yes, utility infrastructure is one of McFadden’s deeper specialisms. WIRS accreditation covers direct delivery of water utility groundworks including trenching for mains, chamber construction, joint bays, and flow meter installation. NERS accreditation covers electric utility groundworks including trenching for ducting, substation bases, joint bays, and kiosk foundations. Both accreditations matter to water companies and Tier 1 civils contractors who procure groundworks through regulated supply chains.
Yes. Concrete bases and foundations are a regular part of McFadden’s groundworks scope. Utility foundations (substation bases, kiosks, chambers) and commercial foundations (drainage structures, access road sub-bases, hardstanding, smaller commercial buildings) are both delivered in-house. For larger structural foundations on major building projects, the teams work alongside specialist structural concrete contractors where the scheme’s design calls for it.
Yes. Drainage installation runs as part of most groundworks packages, covering surface water drainage, foul drainage connections, soakaways, attenuation systems where specified, and drainage connections to existing networks. The same teams that do the excavation and pipe laying handle drainage as part of the integrated scope, which avoids handoffs between specialist subcontractors on smaller jobs.
Four phases. Site visit and scoping, where the scope is confirmed and a quote or method statement issued. Enabling works, where permits, clearance, and site setup are handled before excavation starts. Excavation and underground works, where the bulk of the job happens (earthworks, trenching, foundations, drainage, chamber construction). Reinstatement and handover, where the surface is put back to specification and the site is handed back clean with records. For larger framework jobs the phases can overlap in programme, but the sequence stays the same.
McFadden delivers groundworks across Hertfordshire, London, Surrey, Essex, Cambridgeshire, and Berkshire as standard, working from the Hertfordshire depot. Larger schemes and framework contracts take teams further afield. Get in touch for projects outside this core area.
Whether it's a single trench run, a full site groundworks package, a utility infrastructure job, or a commercial build needing foundations and drainage, the groundworks team are happy to talk through the scope and get a quote over. Subcontract enquiries from civils firms, main contractors, and developers welcome.
Phone: 01707 648 420
Email: info@tonymcfadden.co.uk