Decoding
Complexity
Visior Group is a specialist consultancy in risk mitigation, dispute resolution, expert witness and litigation support for major projects and investments worldwide.
Instructions accepted across 35+ jurisdictions — conflict checks and availability confirmed within 24 hours.
Our expertise
Our experts
Independent, senior-led opinion on the issues that decide major project disputes — quantum, delay, entitlement and technical performance — delivered from London across the UKMEA region and beyond.
Quantum, Delay & Disruption
Forensic assessment of cost and time across every stage of the project lifecycle, presented so it withstands cross-examination.
Learn more →International Arbitration
Expert evidence under ICC, LCIA, SIAC, AIAC, QICCA and ad hoc UNCITRAL rules, plus litigation, adjudication and expert determination.
Learn more →Contractual Entitlement
Independent opinion on entitlement, variation, compensation events and disallowed cost under NEC, FIDIC and bespoke forms.
Learn more →Investment & Lender Advisory
Technical and commercial due diligence for investors, lenders and sovereign funds evaluating capital projects across borders.
Learn more →Risk Mitigation & Assurance
Prevention-led reviews of contract strategy, cost and programme assurance before commitment is made.
Learn more →Live Contract Intelligence
Bosley LCI turns decades of major-project dispute experience into live, dispute-aware contract analytics.
Learn more →Our services
Across the whole life of the contract
As trusted independent advisers and experts, we help clients manage risk, contracts, claims and disputes on complex and challenging projects.
Pre-contract advisory
Procurement strategy, contract selection and drafting, risk allocation, estimate and schedule assurance before commitment is made.
- Contract strategy & drafting
- Cost and programme assurance
- Risk allocation reviews
Post-contract commercial
Commercial management, change control, claims preparation and defence through delivery — protecting position while keeping the project moving.
- Change & variation control
- Claims preparation and defence
- Interim project reviews
Quantum & delay analysis
Forensic examination of cost and time. Independent, method-transparent analysis that withstands cross-examination.
- Forensic cost assessment
- Programme & delay forensics
- Disruption and productivity loss
Investment & lender advisory
Technical and commercial due diligence for investors, lenders and sovereign funds evaluating capital projects across borders.
- Technical due diligence
- Independent certification
- Portfolio project assurance
Dispute resolution & litigation support
Independent expert opinion, grounded in major programme delivery.
Appointments on quantum, delay and technical issues in international arbitration under ICC, LCIA, SIAC, AIAC, QICCA and ad hoc UNCITRAL rules, as well as in domestic litigation, adjudication and expert determination.
- Quantum & Valuation
- Delay, Disruption & Prolongation
- Technical & Engineering
- Operational & Performance
- Contractual Entitlement
- Programme & Planning
- Defects & Remediation
- Acceleration & Variation
Instructions from the Americas through the Gulf to Australia
£10bn+
Aggregate value of projects advised
35+
Jurisdictions engaged
24hrs
Typical conflict check and availability confirmation
Industries
Where capital is heaviest and the record matters most
- Construction & Engineering
- Rail & Transport Systems
- Highways & Bridges
- Aviation Infrastructure
- Energy & Utilities
- Urban Development
- Defence & Government
- Water & Environmental
Insights & experience
Representative appointments
Regional rail PPP dispute
Rail · PPP · Expert determination
Independent opinion on contractual entitlement arising from rolling stock design development, specification change and prolongation under a major rail PPP.
National highways programme
Highways · NEC · Target cost
Independent expert on target cost disallowance, compensation events and programme delay across a major highways scheme.
International airport rail link
Rail / Aviation · Prolongation
Expert evidence on prolongation and disruption across interfacing civils and systems packages on an airport rail connection.
In development
Bosley LCI — live contract intelligence
A programme harnessing decades of major-project advisory and dispute experience to give clients live, dispute-aware visibility of contract risk while there is still time to act.