Independent dispute advisory practice
Strategic Dispute Consultancy and Independent Mediation
Cosil Solutions provides strategic dispute consultancy and independent mediation for individuals, businesses, organisations and public bodies. The work brings structure to complex disputes, complaints, evidence and decisions before positions become harder to resolve.
Accredited civil and commercial mediator. Over 20 years’ housing and property experience. Award-winning preventative mediation service.
Since 2003
Housing and property sector experience
Since 2013
Direct dispute involvement
200k+
Complex matters supported
- Accredited Civil & Commercial Mediator
- Greater London Enterprise Awards 2025
- Sector experience since 2003
- 20+ Years Housing & Property Sector
Dispute advisory practice
Strategic dispute consultancy for better decisions before escalation.
Professional review
Evidence-based review of documents, chronology, risk and options before escalation, mediation, complaint response or tribunal preparation.
Conflict Resolution
Brought in early, before positions harden. Structured intervention that keeps options open and costs down.
Dispute consultancy & case management
Strategic guidance, compliance review, and case assessment at every stage of a dispute.
Civil & commercial mediation
Accredited, impartial, and confidential. Used when it is the right tool, not the default one.
Proprietary framework
R.E.S.O.L.V.E.
Accredited mediation
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Situations we are brought into
Civil and commercial mediation for suitable disputes, supported by preparation that helps parties understand the issues.
Document, evidence and case review
Focused practice areas
Permitted support with document review, complaint drafting, tribunal preparation, evidence review and procedural guidance.
Cosil is engaged when a dispute, complaint or decision needs clearer structure.
Landlord & Tenant Disputes
Practical resolution and position clarity across residential and commercial tenancies, including rent, obligations, disrepair, and escalation risk.
Leasehold & Service Charge Disputes
Technical and regulatory matters requiring precision, including service charges, enfranchisement, right to manage, and complex lease issues.
Dispute Strategy & Advisory
Strategic assessment of your dispute position, risk exposure, and options before matters escalate or formal proceedings become likely. Structured advisory support to define proportionate next steps and protect your position.
Boundary, Neighbour & Community Disputes
Structured handling of entrenched disputes where positions have hardened and communication has broken down.
Complaint Handling & Case Review
Review of complaints, compliance, and documentation to ensure positions are clear, defensible, and aligned with regulatory expectations.
Civil & Commercial Mediation
A structured, impartial process where parties retain control of the outcome. Applied across property, housing, workplace, commercial, partnership, and separation-related disputes. Used as part of a wider resolution strategy.
Property, Housing & Civil Mediation
- Housing and property disputes
- Leasehold and service charge disputes
- Landlord and tenant disputes
- Boundary and neighbour disputes
- Commercial, workplace and organisational disputes
- Community and multi-party disputes
Complex & Escalated Matters
- Complaints and escalation disputes, including pre-Ombudsman matters
- Matters heading toward tribunal, court or mediation
- Multi-party disputes requiring structure
- Governance and organisational decision-making breakdowns
Typical matters include housing, property, leasehold, complaint, governance, stakeholder and commercial disputes, including preparation for mediation, Ombudsman submissions or tribunal processes.
Separation-Related Disputes
Financial, property, and ownership disputes arising from separation.
Where parties need a structured process for financial or property matters without unnecessary escalation.
Areas Covered
- Financial settlement and asset division
- Property disputes arising from separation
- Co-ownership and beneficial interest disputes
- Family business disputes on separation
Position established
A clear, defensible position
Each engagement clarifies what is known, what is disputed, what is missing and what should happen next.
What clients gain
A clear, defensible position from the outset of the engagement.
Exposure reduced
Escalation and litigation exposure identified and actively reduced.
Path to resolution
A structured route to resolution or settlement, clearly defined.
Capability strengthened
Stronger internal handling of complex disputes going forward.
Time, cost and reputation protected
Active protection of time, cost, and reputation at every stage.
Ready to discuss your matter?
Some matters need a short review. Others need structured analysis, readiness assessment, negotiation support or mediation preparation.
Methodology
A disciplined approach to every matter
Every matter is different. The discipline is consistent: understand the situation before advising on the proportionate next step.
01
Understand
Assess the history, documents and party positions.
02
Clarify
Identify what is known, what is in dispute, and where the gaps and risks sit.
03
Assess
Review compliance, procedure and position strength before action is taken.
04
Guide
Provide clear, structured guidance on proportionate next steps.
05
Conclude
Structure the most appropriate route to a workable outcome.
Why It Matters
Why structure matters
Formal proceedings are sometimes necessary. They are rarely the most proportionate first response. Structure narrows issues, preserves options and reduces late decision-making risk.
| Aspects | Litigation / Court | Cosil solutions |
|---|---|---|
Time to Resolve | Typically 12 months | Weeks rather than months, in most cases |
Average Cost | Significant, often unpredictable | Transparent, agreed in advance |
Control | Judge-led | Client-led |
Privacy | Public record | Confidential and without prejudice |
Approach | Adversarial and formal | Structured and proportionate |
Relationship Impact | Can strain or damage working relationships | Preserves communication and cooperation |
Outcome | Judgment | Resolution-focused |
Figures are indicative and vary by matter type, complexity, and stage. All Cosil engagements are scoped and agreed in advance.
Who We Support
Organisations, individuals and professional partners
Our work is defined by the pressure on the matter, not only the type of client. The approach is structured, clear and proportionate.
Housing & Property
Organisations Managing Complaint and Dispute Risk
Portfolio-level dispute management, complaint handling review and strategic support where volume, regulatory pressure or escalating matters require independent input.
- Managing agents and housing providers
- Housing associations and registered providers
- Local authorities
- Private landlords and commercial operators
- Employers and workplace teams
Private Individuals & Complex Matters
Leaseholders, Tenants & Property Owners
Structured support for leasehold, service charge, landlord and tenant, boundary, repairs, disrepair and unresolved complaint matters.
- Leaseholders
- Residential tenants
- Property owners
- Freeholders
- Residents associations
Organisations & Operational Teams
Legal Teams & Professional Advisors
We work alongside solicitors, housing providers and professional advisers where specialist dispute expertise, independent review or mediation strengthens the approach.
- Solicitors and legal teams
- Housing consultants
- Surveyors and property professionals
- Compliance and governance advisors
Professional recognition
Trusted by sector professionals
Julie Jules
Insley at Cosil Solutions provided me with support to complete a money claim against a large organisation following them causing significant damage to my home. Insley reviewed my claim, structured a proposal to amend and strengthen it, and responded in the time frame promised. Within hours the defendant offered an out of court settlement. Insley went above and beyond to help me negotiate a final satisfactory offer, which I accepted.
Elvis G
Insley and Cosil Solutions have done great and supportive work for myself. Insley helped on resolving a boundary dispute that my neighbour had raised against me. Insley was engaged with all communication between me and my neighbour. Speaking with Insley throughout the procedure was a pleasure as her communication style gives you peace of mind.
Blossom Edwards
I found Insley to be highly professional with a vast knowledge of leasehold tenures. Solution-focused with a high level of customer care. I would welcome the opportunity to work with her again.
Charles Hammond
I worked with Insley at Family Mosaic and found her to be very knowledgeable and passionate in all aspects of her role. A professional who delivered her services diligently and efficiently.
Sam Ogah
Insley is by far one of the most knowledgeable individuals I have worked with in the field. She taught me a great deal about the sector, property management, and various issues surrounding property law. I would not hesitate in recommending her expertise to any housing organisation.
Petra
I am so grateful for Cosil Solutions' support in handling my property dispute in a quick and professional manner. Supportive, friendly, and unbiased throughout. I would not hesitate to use them in the future.
Collaboration
Working alongside your team
Cosil acts as a specialist partner, not a replacement for legal or professional advice. We contribute structure where it matters most.
Law firms and legal teams
Specialist dispute consultancy and mediation where coordinated input strengthens the outcome.
Housing providers and organisations
Support with complaint handling, case positions and defensible decisions.
Consultants and advisors
Specialist mediation and dispute consultancy within broader advisory engagements.
Referral partners
Referral arrangements are available for professionals whose clients need structured dispute support or accredited mediation.
ABOUT
Insley Ettienne
Founder & Director
R.E.S.O.L.V.E. framework
Why Cosil
What sets our practice apart?
01
Genuine specialism
The R.E.S.O.L.V.E. framework provides a consistent method for assessing disputes, evidence, risk and resolution options. Learn How Cosil Works.
02
Consultancy and mediation combined
Professional Review Methodology
03
Depth of experience
Sector experience since 2003 and direct dispute exposure across complex matters since 2013.
04
Proportionate, not prescriptive
The right approach depends on the situation. We assess first, then advise on what is proportionate.
05
Structured from the outset
Every engagement starts with the situation, documents, risk and realistic options. There is no pressure to escalate.
06
A collaborative practice
We work alongside legal teams, housing organisations and professional advisers as a specialist partner.
Recognition
Recognised practice
Cosil Solutions has been recognised for specialist dispute consultancy and mediation in complex, high-pressure contexts.
2025
Greater London
Enterprise Awards
Winner
MSDUK
Certified Diverse
Supplier
Professional review looks at documents, chronology, relevant legal and procedural context, escalation risk, commercial impact and practical options.
Client journey
Our commitment
Resolution that can withstand scrutiny
Each matter is considered through clear decision gates: proceed, pause, refer or decline.
For organisations
Disputes resolved with less disruption, clearer process and reduced exposure.
For individuals
A clear position, structured approach and support that avoids unnecessary exposure.
For professional partners
Specialist input that strengthens the overall approach without cutting across it.
FAQ
Common questions.
If your question is not covered, a short discussion is the clearest starting point.
Yes. Conflict resolution support is available at the earliest stage, before positions become entrenched and before formal processes are necessary.
Early engagement typically produces better outcomes, greater flexibility, and lower cost.
You do not need to be at crisis point to seek support.
Conflict resolution addresses situations before positions harden, where dialogue is still possible and a structured approach can prevent escalation.
Consultancy provides strategic support at any stage: clarifying your position, assessing risk, organising evidence, and guiding proportionate decisions.
Mediation is a structured, facilitated process used where communication has broken down and parties need independent support to reach agreement.
An initial discussion will identify which approach fits your situation.
Support is provided across:
- Landlord and tenant disputes
- Leasehold and service charge matters
- Housing and property disputes
- Boundary and neighbour disputes
- Workplace disputes
- Community disputes
- Commercial disputes,
- Complaint handling and case review.
Our services can be engaged at any stage, from early concern through to compliance and formal process support.
Yes. This includes reviewing complaint handling processes, identifying procedural gaps, assessing whether required stages have been followed, and ensuring documentation and evidence are in order.
This work draws on extensive experience of how disputes are assessed at formal stages, which informs the quality of support provided well before that point is reached.
Yes. Cosil works alongside legal teams, housing providers, managing agents, and other professionals. This includes supporting ongoing cases, providing independent assessment, and contributing to structured resolution strategies where coordinated input strengthens the outcome.
Cosil provides consultancy, conflict resolution, strategic dispute support, and civil and commercial mediation. The practice can work alongside solicitors, legal teams and professional representatives where coordinated input is useful.
Mediation is appropriate where communication has broken down, where positions are becoming entrenched, or where parties want to reach a workable resolution without formal determination.
It is a structured, impartial process. It is not always the first step.
An initial discussion will clarify whether mediation, conflict resolution, or consultancy is the right starting point.
When a matter is becoming difficult to resolve, escalating, or lacks a clear structure. Engagement does not require a matter to have reached formal proceedings. Earlier involvement typically produces better outcomes and greater flexibility.
Not necessarily. Cosil Solutions assesses your position and can work alongside legal advisors where required.
Many matters benefit from structured dispute consultancy before legal proceedings are considered. Where a solicitor is already instructed, Cosil can work alongside them.
You receive a clear assessment of your position, the risks identified, and structured next steps. There is no obligation to proceed further. The initial consultation is designed to give you clarity, not to create dependency.
If mediation does not result in a settlement, the parties remain free to pursue other options including formal proceedings.
Nothing said or disclosed during mediation can be used in subsequent proceedings, the process is entirely without prejudice. In practice, mediation frequently narrows the issues even where a full settlement is not reached, which reduces the scope and cost of any formal process that follows.
Contact
Start with a confidential discussion. If Cosil can assist, the next step will be scoped clearly.
admin@cosilsolutions.co.uk
Phone
07587 065 611
Hours
Monday to Friday, 9:00 am to 5:00 pm
Book Directly
All enquiries are treated in confidence. We respond within one working day.
Engagements are scoped by nature, complexity and stage.
