Class Action Litigation Funding Explained: A Practical Guide to Funding GLOs, UK Opt‑Out Competition Claims, and Securities Class Actions

Class action litigation funding (also called third‑party litigation funding or group action funding) provides the capital needed to run complex, high‑value collective cases. It can turn a valid claim into a viable claim by underwriting the significant costs of multi‑party litigation: legal fees, expert evidence, data and economic analysis, and the administration required to build and communicate with a large claimant group.

When used well, funding can help groups of claimants pursue collective redress against well‑resourced defendants without each individual carrying the full financial burden. It can also strengthen case execution by enabling experienced counsel teams, sophisticated expert support, and professional settlement administration from day one.

What is class action litigation funding?

Class action litigation funding is a financing arrangement where a specialist funder provides capital for a collective legal claim after assessing its merits and economics. The claim may involve many individuals, businesses, or investors with shared issues of law and fact. In return for taking the financial risk, the funder typically receives a share of the recovery if the case succeeds (through settlement or judgment).

Funding is commonly used for multi‑party or representative proceedings where:

• Common issues exist across the group (for example, the same conduct causing similar harm).
• Costs are high relative to what any one claimant would rationally spend alone.
• Defendants are well‑resourced and can defend aggressively, making robust funding essential.
• Efficient group coordination materially improves outcomes, negotiation leverage, and administrative clarity.

Why class action funding can be a game‑changer for claimants

Collective claims can deliver meaningful accountability and compensation, but they are also operationally demanding. Funding helps unlock the benefits of group litigation by making the case financially executable and professionally managed.

Key benefits in practice

• Access to justice at scale: Claimants can pursue a meritorious claim even when individual losses would not justify standalone litigation.
• Risk management: Funding can reduce the need for claimants to pay large costs upfront, supporting participation and retention through a long timeline.
• Stronger case build: Well‑resourced expert work (economists, forensic accountants, technical engineers, sector specialists) can improve liability and damages presentation.
• Professional administration: Book‑building, claimant onboarding, notices, and settlement distribution often require dedicated infrastructure.
• Leverage in settlement discussions: A well‑funded, well‑organized class is typically more resilient to delay tactics and procedural pressure.

Where it applies: common collective and representative proceedings

Funding can support different procedural models, depending on jurisdiction and claim type. Three frequently discussed categories include UK Group Litigation Orders (GLOs), UK opt‑out competition class actions, and US‑style securities class actions.

1) UK Group Litigation Orders (GLOs)

A GLO is a court‑managed mechanism in England and Wales for handling multiple claims that give rise to common or related issues. It is designed to coordinate case management and costs efficiently while allowing each claimant to retain an individual claim.

In a typical GLO structure, the court may:

• Maintain a group register of participating claims.
• Identify common issues to be determined in a coordinated way.
• Make collective case management and costs orders to streamline the litigation.

2) UK opt‑out competition class actions (Competition Act 2015 regime)

In the UK, certain competition claims can proceed on an opt‑out basis within the Competition Appeal Tribunal (CAT). This means eligible claimants may be included automatically unless they actively opt out, subject to the requirements and approvals applicable to collective proceedings.

These claims can include:

• Follow‑on claims (relying on established competition infringement findings).
• Standalone claims (alleging anti‑competitive conduct directly).
• Collective settlements that may require approval under the relevant regime.

Following developments such as Merricks v Mastercard, the UK opt‑out landscape has attracted significant attention, with evolving procedures and growing interest in collective redress mechanisms.

3) US‑style securities class actions (and similar shareholder claims)

Securities class actions are commonly associated with shareholder claims involving alleged misstatements, disclosure violations, market manipulation, or other conduct said to have impacted investor losses. They often involve:

• Appointment of a lead plaintiff or representative.
• Significant expert evidence and economic analysis.
• Detailed document discovery and complex causation and loss modelling.

How class action litigation funding works - step by step

While each funder has its own process, the commercial and operational flow is often similar across funded collective claims.

1) Initial assessment (merits and feasibility)

A funder begins by evaluating whether the claim is strong enough and large enough to justify funding. This typically includes a review of liability theories, early evidence, legal risks, damages methodology, and the enforceability or collectability of any potential recovery.

2) Book‑build (assembling and validating the class)

For many collective claims, there is a period of class formation where the claimant group is identified, signed up, and validated. This stage helps quantify aggregate losses, test commonality and typicality, and develop a clean data picture for experts and counsel.

3) Funding agreement (commercial terms and governance)

If the claim is approved, the funder and the claimant representatives (and often counsel) enter a funding agreement. This will typically address:

• Budget and staged capital deployment.
• Return structure (percentage of recovery and/or other arrangements).
• Decision‑making and information rights.
• Settlement process and how approvals and distributions will work.

4) Capital deployment (fees, experts, and administration)

Funding is used to pay the major case costs, which commonly include:

• Legal fees and litigation expenses.
• Expert witnesses and specialist consultants.
• Court fees and procedural costs.
• Book‑building and class communications.
• Claims administration and, where needed, settlement distribution infrastructure.

5) Ongoing case management (strategy and coordination)

Collective cases require disciplined project management. Effective coordination among representatives, counsel, experts, and administrators can help keep the case cohesive as it moves through procedural milestones, evidence phases, and settlement discussions.

6) Resolution (settlement or judgment) and distribution

If the case resolves successfully, recoveries are distributed to eligible class members under the applicable framework. Funders often receive their return through common fund or waterfall distribution structures that define priority and percentages from the recovery pool.

How funders get paid: typical return ranges and common structures

In funded collective litigation, a funder’s return is commonly structured as a percentage of the recovery. The precise percentage depends on risk, expected duration, capital requirements, and jurisdictional factors.

Typical percentage ranges often discussed in market practice include:

Common fund and waterfall structures (plain‑English overview)

Two terms come up frequently in funded collective actions:

• Common fund: The recovery is treated as a shared pool, and fees or funding returns may be taken from that pool (often subject to the relevant court or tribunal framework).
• Waterfall: A tiered distribution method that sets out the order in which amounts are paid (for example, reimbursement of certain costs, then the funder’s return, then distribution to claimants), sometimes with different tiers depending on timing or outcome.

These structures are designed to make outcomes transparent and administratively workable, especially when there are many claimants and multiple categories of costs.

What makes a claim suitable for class action funding?

Funders typically look for both legal suitability (can it proceed as a collective claim?) and economic suitability (does it make commercial sense to fund?). Strong cases often show clear alignment across these dimensions.

Class suitability: the core building blocks

Although terminology and formal tests vary by jurisdiction and procedure, suitable collective actions commonly demonstrate:

• Commonality: Shared legal and factual issues across the class.
• Numerosity: Enough affected people or entities to justify a collective approach.
• Typicality: Representative claims reflect the broader class’s issues.
• Adequate representation: Capable representatives and experienced counsel to protect the class’s interests.

Funding suitability: what funders typically underwrite

• Provable liability: A credible pathway to establishing wrongdoing.
• Quantifiable damages: A defensible approach to measuring loss on an aggregate basis.
• Collectible defendants: Parties with the capacity to pay a settlement or judgment.
• Experienced counsel: Teams with a track record in complex, multi‑party litigation.
• Operational feasibility: A workable plan for claimant onboarding, communications, and data management.

Key success factors: what helps funded class actions win

Funding is powerful, but outcomes still depend on execution. The strongest collective claims tend to combine robust legal merits with disciplined organization.

1) Strong leadership and governance

Well‑structured leadership helps maintain momentum and clarity across a diverse claimant base. Engaged representatives and experienced counsel can help ensure consistent decision‑making throughout the case lifecycle.

2) A clear liability story backed by evidence

Persuasive class actions usually present a coherent narrative that links conduct to harm, supported by documents, expert analysis, and a practical theory of causation.

3) Credible damages methodology

Collective litigation often turns on damages modelling. Early investment in rigorous methodologies can reduce surprises later and improve settlement positioning.

4) Coordinated class communication

Clear, consistent communication helps with participation, data collection, and long‑term engagement. This is especially important for opt‑out regimes (where notices and class information processes can be central) and large opt‑in book builds (where retention matters).

5) Sufficient capital for the full journey

Collective claims can run longer than individual cases due to procedural steps, certification stages, expert schedules, and appeals. Adequate capital and disciplined budget management help keep the case strong through each milestone.

Risks to plan for - and how strong teams manage them

Collective proceedings can deliver excellent outcomes, but they are not friction‑free. The best funded cases anticipate risk early and design around it.

• Certification risk (or decertification later): Collective mechanisms often require meeting procedural thresholds, and standards can vary by forum. Strong early preparation, clear common issues, and robust representation help reduce this risk.
• Cross‑border coordination complexity: When claimants, evidence, or defendants span jurisdictions, coordination becomes more demanding. Experienced counsel and a realistic procedural plan are essential.
• Timeline uncertainty: Multi‑party litigation can face procedural delays, extensive discovery, and appeals. Staged budgeting and milestone planning help maintain momentum.
• Settlement allocation challenges: Designing a fair distribution model across many claimants can be complex. Investing in administration and transparent methodologies helps avoid disputes later.

The upside: these risks are manageable when the case is built on strong merits, a credible damages model, and a disciplined governance and communications framework.

What costs can funding cover?

Funding is often used to cover the full suite of costs needed to run a collective action effectively, which may include:

• Legal fees and disbursements: Solicitors, counsel, and litigation expenses.
• Expert evidence: Economists, forensic accountants, industry specialists, and technical experts.
• Technology and data work: Document management, analytics, and claimant data processing.
• Group administration: Book‑building operations, claimant onboarding, and communications support.
• Settlement administration: Eligibility validation, distribution calculations, and payment operations.

This comprehensive coverage is one reason funding can dramatically improve the quality and resilience of a class action strategy.

How to evaluate a funding partner - a practical checklist

Because collective litigation is a long‑term partnership, choosing the right funder can influence speed, efficiency, and overall outcomes. When comparing options, it can help to assess fit across economics, capability, and working style.

Commercial and structural fit

• Transparent return terms: Clear percentage and waterfall mechanics, with no surprises.
• Budget realism: A plan that supports the full litigation arc, not just early phases.
• Alignment on settlement: A shared approach to decision‑making and approval pathways.

Operational strength

• Book‑build support: Ability to help scale claimant acquisition and validation where needed.
• Administration readiness: Practical capability to support notices, communications, and distribution planning.
• Expert network: Familiarity with top‑tier experts and the economics of collective damages.

Execution and partnership

• Responsiveness: Timely decisions and clear communication during fast‑moving moments.
• Experience in similar matters: Relevant familiarity with the procedure and claim type.
• Long‑term mindset: Willingness to support the case through inevitable complexity.

Frequently asked questions

Does funding mean claimants lose control?

Funding arrangements are designed to support the claim, not replace the role of representatives and counsel. Governance and decision rights are typically set out in the funding agreement, with the aim of aligning incentives and ensuring the case is run effectively.

Is class action funding only for huge groups?

Not necessarily. While many funded cases involve large classes, what matters most is the presence of common issues, a credible damages model, and enough total value to justify the costs of collective litigation.

How early should a case approach a funder?

Often, earlier engagement helps. Early assessment can shape evidence priorities, book‑build strategy, damages methodology, and budgeting. That said, funders usually require enough information to evaluate merits and economics, so a focused preliminary case outline is valuable.

What types of claims commonly use funding?

Funding is frequently used across:

• Consumer claims (for example, product issues, financial services concerns, unfair terms).
• Competition damages (for example, cartel or dominance‑related claims).
• Securities and investor claims (for example, alleged disclosure or misrepresentation matters).
• Environmental and ESG‑linked claims where harm is widespread and expert evidence is central.

Conclusion: funding can transform a strong claim into a successful collective outcome

Class action litigation funding exists to solve a practical problem: collective claims can be legally strong yet financially difficult to run. By underwriting legal fees, expert costs, and the operational demands of multi‑party proceedings, funders can help claimant groups pursue fair compensation and accountability with professional strength from the outset.

The best results tend to come from a combination of strong merits, quantifiable damages, collectible defendants, experienced counsel, disciplined class communications, and sufficient capital to see the matter through certification, case development, and resolution. With those foundations in place, funding can be a powerful catalyst for achieving meaningful collective redress.