Strategic Dispute & Risk Consultancy

When disputes escalate,
we bring structure, clarity, and control

Cosil Solutions is a strategic dispute and risk consultancy and accredited mediation practice. We support organisations and individuals across property, housing, workplace, community, and commercial disputes. We assess the situation, map where risk and breakdown points sit, and put a clear structure in place to move matters forward.

Most providers facilitate disputes. Cosil Solutions structures them, assesses risk, and guides resolution, with mediation used where appropriate.

20+

Years sector experience

Public

& private sector experience

Complex

Matters managed

Our approach

We assess. We structure.

We resolve.

When a dispute becomes difficult to resolve, the problem is rarely the dispute itself. It is the absence of structure around it. Cosil Solutions brings that structure: identifying where risk and breakdowns sit, clarifying what is at stake, and establishing a clear, proportionate path forward. With experience in housing and property dating back to 2003, the approach is grounded in practical, operational, and dispute-based knowledge across both private and public sectors.

1

Conflict Resolution

Brought in early, before positions harden. Structured intervention that keeps options open and costs down.

2

Dispute consultancy & case management

Strategic guidance, compliance review, and case assessment at every stage of a dispute.

3

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.

The R.E.S.O.L.V.E. framework underpins all Cosil engagements. It provides a consistent, evidence-based approach to assessing disputes, identifying risk, and guiding proportionate decisions at every stage. Full framework detail is available on request.

R

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S

O

L

V

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Track record

Experience that speaks directly to complex matters

Cosil Solutions is not a general mediation practice. The depth of experience behind every engagement is specific, operational, and dispute-focused.

2003
Sector experience in housing and property begins, spanning policy, procedure, lease and compliance review, right to buy, enfranchisement, right to manage, service charge, and disrepair.
2013
Direct involvement in complex and high-value disputes, including matters exceeding £200,000. Exposure to tribunal proceedings, mediation, and formal dispute processes.
£200k+
High-value disputes managed across the full range of housing, leasehold, and property matters, with a consistent focus on outcome, cost containment, and reputational protection.
Strong outcomes
Consistently strong outcomes across complex disputes, with a focus on reducing litigation exposure, cost, and reputational risk.
Full
Experience spanning early-stage issues through to tribunal and formal proceedings, across both private and public sector environments.

Areas of practice

Strategic consultancy across, the full dispute lifecycle.

Specialist in property, housing, and regulatory dispute environments, with wider application across workplace, community, and commercial matters. Every engagement is approached with the same structured, evidence-based methodology regardless of type, scale, or stage.

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.

Civil & Commercial Mediation

  • Property and housing disputes
  • Leasehold and service charge disputes
  • Boundary and neighbour disputes
  • Workplace and organisational disputes
  • Commercial and contractual disputes
  • Community and antisocial behaviour disputes
  • Partnership and shareholder disputes
  • Professional negligence disputes
  • Probate and inheritance disputes
  • Consumer and business disputes

Complex & Escalated Matters

  • Complaints and escalation disputes, including pre-Ombudsman matters
  • Pre-action and ADR-linked disputes, including matters heading toward tribunal or court
  • Multi-party and group disputes requiring structured coordination
  • Governance and organisational disputes involving internal decision-making breakdowns.

Cosil Solutions operates across the full range of civil and commercial dispute types. If your matter is not listed, an initial discussion will confirm whether we can assist.

Our role is to bring structure, clarity, and a controlled process to guide resolution without unnecessary escalation. Increasingly, courts expect parties to engage with appropriate forms of dispute resolution before proceeding to formal proceedings.

Separation-Related Disputes

Financial, property, and ownership disputes arising from separation.

Where parties need a structured, independent process to resolve financial and property matters without court intervention.

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

The goal is a clear, defensible outcome.

Each engagement focuses on reducing exposure, clarifying position, and achieving a resolution that holds.

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?

An initial consultation clarifies the position, the risk, and what a structured next step involves.

Our methodology

A structured approach to every matter

Every matter is different. The methodology is consistent: understand the situation fully before advising on it, and guide decisions that are proportionate to what is at stake.

01

Understand

Assess the situation in full, including history, documentation, and the position of all parties.

02

Clarify

Identify what is known, what is in dispute, and where the gaps and risks sit.

03

Assess

Review compliance, procedural stages, and the strength of each position before any action is taken.

04

Guide

Provide clear, structured advice on proportionate next steps.

05

Conclude

Structure the most appropriate route to a clear, workable outcome, whether through dialogue, mediation, or case management.

Why It Matters

Cosil Solutions vs litigation

Formal proceedings are sometimes necessary. They are rarely the most proportionate first response. Mediation and structured dispute resolution resolve the majority of dispute, with industry data indicating settlement rates of approximately 70 to 90 per cent.

AspectsLitigation / CourtCosil 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

Who We Support

Our work is defined by the nature of the problem, not the type of client. Whether the matter sits within a housing portfolio, a private property dispute, or a professional advisory context, the approach is the same: structured, clear, and proportionate.

Housing & Property

Organisations Managing Dispute Risk

Portfolio-level dispute management, compliance review, and strategic support where dispute volume, regulatory pressure, or escalating matters require structured, 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 individuals where the complexity or value of a matter requires specialist input: leasehold disputes, landlord and tenant matters, boundary conflicts, separation-related property issues, and complaints that have not been resolved.

  • Leaseholders
  • Residential tenants
  • Property owners
  • Freeholders
  • Residents associations

Organisations & Operational Teams

Legal Teams & Professional Advisors

We work alongside solicitors, legal teams, housing providers, and professional advisors where specialist dispute expertise, independent assessment, or accredited mediation strengthens the overall approach and outcome.

  • Solicitors and legal teams
  • Housing consultants
  • Surveyors and property professionals
  • Compliance and governance advisors

Professional recognition

Trusted by sector professionals

"Insley took the lead on the entire process. She demonstrated clarity, initiative, and sound professional judgement throughout. It was clear that Insley was driving the resolution forward, balancing risk and time sensitivity with confidence and expertise. Her leadership and ability to navigate complex legal frameworks made a significant impact on the outcome of the case. A trusted and highly capable professional, I would welcome the opportunity to work with her again on any high-stakes or sensitive matter."
Martin Olomofe MBA MRICS
Head of Property, London Borough of Camden

Julie Jules

Money claim client

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

Boundary dispute client

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

Wandle Housing Association

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

Family Mosaic

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

Family Mosaic

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

Property dispute client

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 Solutions operates as a specialist partner, not a replacement for legal or professional advice. We contribute structured dispute expertise at the points where it matters most.

Law firms and legal teams

Supporting ongoing matters with specialist dispute consultancy and mediation where coordinated input strengthens the outcome.

Housing providers and organisations

Working alongside internal teams to review complaint handling, assess case positions, and support consistent, defensible decision-making.

Consultants and advisors

Providing specialist mediation and dispute consultancy within broader engagements where dedicated dispute expertise adds credibility.

Referral partners

We welcome referral arrangements with professionals who regularly encounter clients requiring structured dispute support or accredited mediation.

ABOUT

Insley Ettienne

Founder & Director

Insley Ettienne has worked in the housing and property sector since 2003. That foundation spans policy and procedure development, lease and compliance review, right to buy, enfranchisement, right to manage, service charge matters, disrepair, and breach of lease.

From 2013, that experience developed into direct involvement in complex and high-value disputes, including matters exceeding £200,000, with exposure to tribunal proceedings, mediation, and formal dispute processes. The focus throughout has been on achieving resolution while limiting reputational exposure and avoiding unnecessary litigation cost.

Supported by postgraduate legal qualifications, the approach brings a strong understanding of legal frameworks and compliance considerations, while maintaining a clear focus on structured resolution.

Cosil Solutions is engaged where matters have become difficult to move and a clear, independent structure is required to reach a workable outcome.

Why Cosil

What sets our practice apart?

01

Genuine specialism

Focused on property, housing, and complex dispute environments. Not a general practice. Not mediation as a default. A specialist practice built around the full dispute lifecycle.

02

Consultancy and mediation combined 

Most practices offer one or the other. Cosil provides the full range: conflict resolution, dispute consultancy, case management, and accredited mediation, each coordinated around the specific situation.

03

Depth of experience

Sector experience since 2003. Direct dispute exposure across complex matters from 2013. The knowledge is operational and specific, not theoretical.

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 begins with a clear assessment of the situation, the risk, and the realistic options. There is no pressure to escalate.

06

A collaborative practice

We work alongside legal teams, housing organisations, and professional advisors as a specialist partner, with the focus always on the best outcome for the matter.

Recognition

Award-winning practice

Cosil Solutions has been recognised for delivering specialist dispute consultancy and mediation that supports robust outcomes for organisations and individuals operating in complex and high-pressure contexts.

2025

Greater London
Enterprise Awards
Winner

MSDUK

Certified Diverse
Supplier

Understand your position before the next step.

The Dispute Readiness Check gives a structured view of where your matter sits, what risk you are carrying, and what a proportionate next step looks like. It takes a few minutes and is free.

Our commitment

The goal is always

resolution.

Not prolonged process. Not escalation for its own sake. Not advice that generates further instruction. The goal, from the first engagement to the final outcome, is a clear, defensible resolution that holds under scrutiny.

We measure success by whether the matter is resolved, whether the position is stronger for having engaged us, and whether the outcome withstands future challenge.

For organisations

Disputes resolved with minimal disruption, defensible process, and no unnecessary exposure.

For individuals

A clear position, a structured approach, and support that does not leave you more exposed than when you arrived.

For professional partners

Specialist input that strengthens your position and adds depth to the overall approach without cutting across it.

FAQ

Common questions.

If your question is not covered here, an initial conversation is the clearest starting point.

Discuss Your Matter

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:

  • Llandlord 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.

No. Cosil provides consultancy, conflict resolution, strategic dispute support, and civil and commercial mediation. Where legal advice is required, this is provided by solicitors or legal representatives. Cosil can work alongside legal teams where both inputs are needed.

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 conversation

If you are dealing with a dispute, complaint, or escalation risk, an initial discussion will identify the most appropriate next step.

Email

admin@cosilsolutions.co.uk

Phone

07587 065 611

Hours

Monday to Friday, 9:00 am to 5:00 pm

All enquiries are treated in confidence.

We respond within one working day.

Engagements are scoped based on the nature, complexity, and stage of the matter.