Driver Group Plc

What Driver Group Plc does

Driver Group Plc (AIM: DRG) is a UK-incorporated public limited company, founded in 1978, that operates primarily under the Diales brand to deliver expert witness and advisory services to the global construction and engineering industry. Its service portfolio is organized into two core lines: Expert Services (providing qualified expert witnesses with a minimum of 15 years' practical industry experience across quantum analysis, delay analysis, project management, adjudication, arbitration, mediation, and multi-disciplinary technical expertise in architecture, building safety and fire, civil and structural engineering, MEP, and energy and environment) and Advisory Services (commercial and contract management, planning and programming, dispute resolution, structural design, pre-contract, quantity surveying, BIM, valuation, and training). The company also operates Driver Project Services (DPS) as a wholly-owned subsidiary for site-based project delivery and maintains a strategic partnership with EVRA Consulting in Africa.

The business model is professional services-fee-based, with quote-based pricing tailored to individual client requirements and multi-year contract cadence, and no publicly disclosed pricing. Revenue mechanics are anchored to engagement-based expert and advisory billing rather than subscription or platform monetization, and there is no proprietary software or disclosed technology platform underpinning service delivery. Go-to-market is direct enterprise field sales, with the firm forming international teams suited to client needs and delivering services locally through its office network.

The company serves the construction and engineering vertical as its primary segment, with the legal profession as a horizontal buyer channel, and lists eight sector verticals on its website: Building, Energy, Infrastructure, Marine, Mining, Oil and Gas, Process and Industrial, and Transportation. It operates from 21 offices across 14 countries and 5 continents, with 200+ staff speaking 17+ languages, and holds Cyber Essentials and Cyber Essentials Plus certifications from the UK National Cyber Security Centre.

Name

Driver Group Plc

Legal name

Driver Group Plc

Website

https://driver-group.com

Company type

Public

Founded year

1978

Operating status

Operating

Headcount range

251–500 employees

Short description

Driver Group Plc, operating as Diales, is a UK-listed professional services firm providing expert witness and advisory services to the global construction and engineering industry, with 200+ staff across 14 countries and operations in arbitration, litigation, and dispute resolution.

Ownership category

akta.pro rank

Product category

Construction Expert Witness and Advisory Services

NAICS

Engineering Services (54133), Other Scientific and Technical Consulting Services (541690)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Construction Management (Agency/Owner’s Rep) (IMAFAAAC)

Keywords

• Expert witness services
• Construction dispute resolution
• Quantum delay analysis
• Arbitration mediation services
• Construction advisory consulting

Headquarters

HQ city

Calgary

HQ country

Canada

HQ region

North America

Offices21 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Expert Services: Expert witness and technical advisory services including quantum analysis, delay analysis, project management experts, adjudicators, arbitrators, mediators, and technical expertise across architecture, building safety, civil engineering, MEP, and energy & environment disciplines. Also includes valuation services.
2. Advisory Services: Commercial and contract advisory, planning and programming, dispute resolution, structural design services, pre-contract services, quantity surveying, building information modeling, valuation, and training services for the construction and engineering sector.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Driver Group Plc, operating under the Diales brand, provides expert witness and advisory services to the global construction and engineering industry. The firm's Expert Services include quantum analysis, delay analysis, project management experts, adjudicators, arbitrators, mediators, and technical expertise across architecture, civil/structural engineering, MEP, building safety, and energy & environment disciplines. Its Advisory Services cover commercial and contract management, planning and programming, dispute resolution, structural design, pre-contract services, quantity surveying, building information modeling, valuation, and training.

Product overview

Diales (a brand of Driver Group Plc) offers a unified portfolio of expert witness and advisory services to the global construction and engineering industry. The portfolio consists of two core service lines: Expert Services (providing qualified expert witnesses with minimum 15 years' experience for arbitration, litigation, and alternative dispute resolution) and Advisory Services (consulting for dispute avoidance and resolution). Expert Services includes specialized sub-services such as Quantum analysis, Delay Analysis, Technical Expertise across multiple engineering disciplines, Project Management, and dispute resolution professionals (Adjudicators, Arbitrators, Mediators). Advisory Services encompasses Building Information Modeling, Quantity Surveying, Structural Design Services, and Training. The company has been established since 1978, operates across 5 continents and 14 countries, and employs over 200 staff.

Differentiator

Problem solved

Functional benefit

Products and services

• Expert Services

Segments10 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered core.

• DPS (Driver Project Services)coreStrategic or Co-development PartnerSister company providing site-based project services. DPS complements Diales expert witness services by offering on-site project execution services.
• EVRA ConsultingcoreStrategic or Co-development PartnerStrategic partner operating in Africa. EVRA provides consulting services in the African market, working in conjunction with Diales for projects across the continent.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Arcadis: Arcadis is a global design and consultancy firm serving construction and infrastructure clients, with contract solutions and project advisory that overlap with Diales' advisory services. Larger incumbent with broader portfolio.
• Turner & Townsend: Turner & Townsend provides project management, cost consultancy, and advisory services for construction and infrastructure globally. Comparable as a broad incumbent with adjacent advisory services.
• WSP: WSP is a global engineering professional services firm serving infrastructure, property, and energy markets with project and advisory services. Comparable as a broad incumbent across overlapping construction and infrastructure verticals.
• Mott MacDonald: Mott MacDonald is a global engineering consultancy serving construction, energy, and infrastructure sectors with project advisory and dispute support. Comparable as a broad incumbent with overlapping construction advisory.

Direct peers

• Berkeley Research Group: BRG's Expert Services practice delivers construction disputes and expert testimony on complex global projects, with overlapping offerings in quantum and delay analysis. Direct competitor in expert witness services.
• Alvarez & Marsal: A&M's Disputes and Investigations practice delivers expert witness, forensic accounting, and dispute advisory services including construction mandates. Direct competitor in expert and disputes services.
• Ankura Consulting: Ankura's Construction Disputes and Advisory practice provides quantum and delay analysis, expert testimony, and project advisory globally. Closely comparable to Diales in dispute and advisory offerings.
• FTI Consulting: FTI's Construction, Projects and Assets practice provides expert services, disputes, and project advisory across energy, infrastructure, and building sectors. Closely comparable dispute and expert service model to Diales.
• Secretariat International: Secretariat provides expert witness and consulting services for international arbitration and litigation, with deep construction and engineering credentials. Direct peer to Diales in the global disputes advisory space.
• HKA: HKA is one of the world's largest independent construction claims and expert services firms, providing quantum, delay, and technical expert services globally. Closely comparable to Diales in core service offering, customer base, and delivery model.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/239608

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 records

Funding overview

Funding rounds

Investors

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

M&A2 records

Investments

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

Frequently asked questions about Driver Group Plc