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Ground engineering across the UK

Ground Stabilisation, Site RemediationEarthworks & Dynamic Compaction

Design, engineering and delivery from an experienced nationwide team.

Ground engineering specialists

We are the UK's leading soil stabilisation, remediation and earthworks business.

JJ Mac Ltd is a Lincolnshire based Civil Engineering, Earthworks and Groundworks
Contractor delivering services nationwide. Therefore, our main areas of expertise include
specialist Ground Stabilisation, Earthworks and Road Construction.

Recovery Transfer Station

Recovery Transfer Station

Mobile Plant License

Mobile Plant License

Soil, Ground Stabilisation

Soil Stabilisation

Roller Dynamic Compaction

Roller Dynamic Compaction

Remediation

Remediation

Earthworks

Earthworks

Eccreditations

Accredited Partner

Smarter use of site-won material

Massive Carbon Savings Through Ground Stabilisation

Ground stabilisation can significantly reduce vehicle movements, imported aggregates and material disposal — helping projects cut carbon while improving site performance.

Explore carbon savings
Case study example 70%

approximate carbon saving achieved by replacing imported aggregate with stabilised site-won soil.

3,000tn imported aggregate 90tn cement treatment
Stories from JJMac

Latest updates

Project stories, construction-site updates and news from across the business.

View all updates
Informative CPD session with Buckinghamshire Council
Latest update

Informative CPD session

With Buckinghamshire Council

A practical CPD session sharing ground engineering insight, project experience and better ways to deliver sustainable outcomes.

Read the update
Trusted partner in your construction
ISO 14001
Acclaim Accreditation
Achilles UVDB
CHAS
CIWM
WAMITAB
Constructionline Gold Member
ISO 9001
CL:AIRE Principal Member

What we do

Commercial Services

Integrated ground engineering, testing and earthworks services delivered by experienced teams across the UK.

JJMac Ground Stabilisation Ground improvementSoil StabilisationDesign-led treatment using lime, cement and specialist binders. JJMac HEIC and Rolling Dynamic Compaction Ground densificationHEIC / RDCIncrease bearing capacity and reduce settlement risk. JJMac Earthworks Construction deliveryEarthworksSafe, accurate delivery using modern 3D and GPS technology. JJMac Remediation Material recoveryRemediation JJMac onsite Geo Testing Quality controlGeo Testing JJMac Decommissioning Soil regenerationDecommissioning
How we work

A complete, controlled process

See how JJMac takes projects from the first enquiry through design, delivery, testing and handover.

View our process
Our Clients
HPC
Skanska
Universal Pictures
Kier
Goldbeck
National Grid
Lawton Tubes
Persimmon Homes
Lidl
Siemens
Clancy Docwra
Johnston Quarry Group
HS2
Wartsila
Black & Veatch
Anglian Water
Lagan
Gregoire Besson
Galliford Try
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SOIL STABILISATION RDC REMEDIATION GROUND STABILISATION EARTHWORKS