What Sandberg does

Sandberg LLP is a UK-based, partner-owned civil and construction materials consultancy founded in 1860 and headquartered at an expanded campus in Clapham, London, with additional offices in Darlington, Darley Dale (Derbyshire), and Woking. The firm provides independent testing, inspection, and consultancy services across chemistry, construction materials, geomaterials, metallurgy, and stone, supplemented by on-site services including Ground Penetrating Radar (GPR) surveys, Impact Echo Testing, leak detection, load testing, cladding and bridge inspection, and expert witness work for construction litigation. Its laboratories were the first UK construction testing facilities to achieve ISO/IEC 17025:2017 accreditation, and it maintains UKAS-accredited methods across concrete petrography, chloride migration, CE/UKCA marking of stone and steel, and other standards-driven tests, supported by in-house Scanning Electron Microscopy (SEM) with energy-dispersive X-ray microanalysis.

The company's commercial model is sales-led B2B professional services, with fees generated on a project-by-project quote basis across four horizontal customer segments: construction industry professionals (consulting engineers, architects, surveyors, property developers), legal professionals requiring expert testimony, building materials manufacturers requiring certification, and government/public authorities. Sandberg operates two wholly-owned subsidiaries — Building Testing Limited (BTL) and Midland Corrosion Services (MCS, acquired 2018) — to extend its testing and corrosion consultancy capabilities, and is governed by a partner structure led by Managing Partner Michal Rybovic with 30+ named partners, senior associates, associates, and consultants.

Recent strategic activity centers on service-line and equipment expansion: 2025 launches include Impact Echo Testing (ASTM C1383), UKAS-accredited Chloride Migration Testing (NT Build 492 / BS EN 12390-18), Taber Abrasion Testing (ASTM C1353), and procurement of a second SEM unit, alongside new Building Retrofit and Sustainable Construction consultancy practices. The firm pursues no external institutional funding, is not actively expanding geographically beyond the UK, and shows no disclosed AI/ML capability, positioning it as a steady, technically specialized incumbent whose growth is tied to UK construction activity, building-safety regulation, and adjacent retrofit/sustainability mandates rather than to venture-style scaling.

Name

Sandberg

Legal name

Sandberg LLP

Website

https://sandberg.co.uk

Company type

Private

Founded year

1860

Operating status

Operating

Headcount range

51–100 employees

Short description

Sandberg LLP is a UK partner-owned construction materials consultancy offering UKAS-accredited laboratory testing, site inspection (including GPR and Impact Echo), and expert witness services to engineers, architects, surveyors, lawyers, manufacturers, and government clients.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Professional Services and Consultancy: Fee-for-service professional consulting services including materials consultancy, testing, inspection, and investigation services. Revenue generated through project-based engagements, expert witness services, and ongoing client relationships with construction industry professionals.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Sandberg is an independent construction materials consultancy providing UKAS-accredited laboratory testing (chemistry, construction materials, geomaterials, metallurgy, stone), site inspection and non-destructive surveys (including GPR and Impact Echo), and technical consultancy services covering building envelope, concrete, steelwork, conservation, sustainability, and expert witness work. Founded in 1860, the firm delivers project-based testing, inspection, and investigation services to construction industry clients across the UK and internationally.

Product overview

Sandberg is a privately owned UK construction materials consultancy offering a unified portfolio of independent professional and technical services. The core offering comprises three interconnected service lines: (1) Laboratory Testing Services covering chemistry, construction materials, geomaterials, metallurgy, and stone testing; (2) Site Services including GPR surveys, site inspection, leak detection, load testing, specialist testing, and steelwork/metallurgy; and (3) Consultancy Services spanning building envelope, building retrofit, concrete consultancy, conservation, expert witness services, geology/geomaterials, polymers, quality assurance, specialist services, steelwork, and stone consultancy. Recent service expansions include Impact Echo Testing (2025) for non-destructive concrete evaluation and UKAS-accredited Chloride Migration Testing. The company also acquired Midland Corrosion Services in 2018 to expand corrosion consultancy capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Chemistry Laboratory Services Comprehensive UKAS-accredited chemistry testing including bomb calorimetry, cement, chloride, mortar, water and leak testing, infrared spectroscopy, hardened concrete analysis, screed analysis, lead in paint, efflorescence, and rock salt testing for construction industry clients.
• Construction Materials Laboratory Services UKAS-accredited testing of aggregates, bricks, blocks, fresh and hardened concrete, masonry, screeds, terrazzo and agglomerated stone, including chloride diffusion and migration testing and CE marking.
• Geomaterials Laboratory Services Specialist geomaterials analysis including concrete petrography, mundic concrete analysis, pyrite/pyrrhotite/mica testing, scanning electron microscopy with X-ray microanalysis, and sulfate attack testing.
• Metallurgy Laboratory Services Metallurgical testing including bolt testing, manhole and gully top load testing, metallographic (macro/micrographic) analysis, metals and weld testing, scaffold component testing, and tensile testing of metals.
• Stone Testing Services Stone testing including building stone analysis and petrography, slate testing, Taber abrasion, Polished Paver Value (PPV) testing, CE/UKCA marking for stone, and general UKAS-accredited stone testing.
• Ground Penetrating Radar (GPR) Surveys Non-destructive GPR surveys for building investigation, chimney flue location, concrete imaging, concrete floor slab surveys, and rebar mapping, including Ferroscan vs GPR comparison services.
• Site Inspection Services Comprehensive site inspection including abseil, bedding mortar, bridge, building, cladding, concrete floors, Ferroscan, fire damaged concrete, GFRC, HAC concrete, NDT weld, paint, precast concrete, RAAC surveys, and woodwool assessment.
• Leak Detection Services Leak location services for bridge decks and roofs and membrane defect identification for waterproofing systems.
• Load Testing Services Structural load testing including bond strength, building and balcony/car park/sports ground barriers, cladding impact, door opening force, foundations, glass panels, pull-out and shear testing of fixings and anchors, and non-fragility roof testing.
• Specialist Testing Services Specialist on-site testing including data logging/measurement and slip resistance testing.
• Steelwork and Metallurgy Site Services On-site steelwork inspection, fire-damaged steel assessment, and site sampling/testing for steelwork and metallurgical analysis.
• Building Envelope Consultancy Consultancy for building envelopes covering condensation risk analysis, facade and roofing assessment, fire safety audits, thermal analysis of facades, and thermography consultancy.
• Building Retrofit Consultancy Expert consultancy for retrofitting existing buildings including condition assessments, site investigations, inspections, material testing, thermal analysis, maintenance programmes, and design reviews.
• Sustainable Construction Consultancy Advisory services on sustainable construction focusing on renewable and recyclable resources, energy reduction, waste minimisation, and net-zero goals through circular economy and low carbon materials.
• Concrete Consultancy Specialist concrete consultancy covering alkali aggregate reactivity (AAR/ASR/ACR), concrete durability, concrete in aggressive ground, and concrete strength assessment, including pre-construction evaluation and diagnosis of AAR in existing structures.
• Conservation Consultancy Heritage and conservation consultancy including building conservation, historic metals assessment, historic mortars analysis, and stone conservation services.
• Expert Witness Services Independent expert advice and expert testimony for litigation involving construction materials, structural issues, and building defects.
• Geology and Geomaterials Consultancy Geology and geomaterials consultancy including geomaterials services and materials for coastal engineering applications.
• Polymer Consultancy Polymer consultancy covering polymers in construction, polymer failure analysis, polymer identification, and polymer microscopy.
• Quality Assurance Consultancy Quality assurance consultancy including contract administration and materials and workmanship assessment.
• Specialist Consultancy Services Specialist services including building damage assessment, demolition and refurbishment consultancy, glass and glazing evaluation, and pavement consultancy.
• Steelwork Consultancy Steelwork consultancy including CE/UKCA marking of steel, ISO 3834 services, failure investigation, welding coordinator (RWC) services, and general steelwork consultancy.
• Stone Consultancy Stone consultancy for building stone including new projects, existing structures, suitability assessment, and source matching.
• Impact Echo Testing Non-destructive evaluation service for concrete structures using Impact Echo Testing methodology in compliance with ASTM C1383 for flaw detection in concrete.
• Chloride Migration Testing UKAS-accredited chloride migration testing in accordance with NT Build 492 and BS EN 12390-18 for assessing chloride diffusion in concrete structures.
• Midland Corrosion Services Niche provider of high-level corrosion consultancy services, providing corrosion testing laboratories and corrosion and materials failure analysis for building services (HVAC systems) and other sectors.

Named customers6 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Midland Corrosion Services Ltd (MCS)coreOthers · 1 January 2018In 2018, Sandberg LLP completed the purchase of Midland Corrosion Services Ltd (MCS). MCS is a niche provider of high-level corrosion consultancy services to the industry. Their corrosion testing laboratories are based at Darley Dale, Derbyshire. MCS is led by its founder, Dr Phillip Munn. Phillip remains a Director and continues to lead the practice.

Scale indicators2 records

Recent moves7 records

Expansion highlights5 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sandberg