Lessons from Broadfield Law v Barnes [2026] EWCA Civ 698

The Court of Appeal’s recent decision in Broadfield Law UK LLP v Barnes offers a timely reminder of the fine line between a routine client care letter and a legally binding agreement on fees. For solicitors and clients alike, the judgment underscores an important principle: stating hourly rates is not enough. Certainty remains king.

For law firms, the case also highlights a practical opportunity – careful drafting of retainers can determine whether fees are straightforwardly recoverable, or instead become the subject of costly satellite litigation.

The Dispute in Context

The case arose out of a long-running dispute between a private client and her former solicitors (then BDB Pitmans, now Broadfield Law). The firm sought to recover approximately £75,000 in outstanding fees for work carried out in matrimonial proceedings.

The client resisted payment on an important technical basis: she argued that the retainer constituted a Contentious Business Agreement (“CBA”) under section 59 of the Solicitors Act 1974. If correct, this would have materially altered the firm’s ability to sue for its fees and instead required the court to scrutinise the agreement’s fairness and effect.

Both at first instance and on appeal, however, the courts rejected that argument. The Court of Appeal ultimately confirmed that the agreement did not qualify as a CBA.

What Is a Contentious Business Agreement?

A CBA is a specific type of solicitor-client contract governing remuneration for contentious work. Under section 59 of the Solicitors Act 1974, such agreements can fix fees by reference to a gross sum, hourly rates, or other mechanisms.

But the classification matters enormously:

If an agreement is a CBA:

• The solicitor’s right to recover fees is governed by the agreement itself;
• The client gains statutory protections, including the ability to challenge the agreement as unfair or unreasonable;
• The route to assessment of costs is restricted.

If it is not a CBA:

• The solicitor may sue for unpaid fees in the usual way;
• The client’s remedies are more limited and may depend on statutory time limits for assessment.

The central question in Barnes was therefore one of classification, an issue which frequently lies at the heart of solicitor-own client disputes.

The Court of Appeal’s Key Finding: Certainty Is Essential

The decisive issue was whether the agreement was sufficiently certain as to remuneration.

The Court of Appeal held that it was not.

Although the client care letter included hourly rates for named fee earners, it also:

• allowed for work to be undertaken by other, unspecified individuals;
• contemplated charges by reference to cost-effectiveness without clear definition;
• permitted future increases in rates without specifying when or by how much.

Those features meant that the agreement did not truly fix remuneration or provide a clear mechanism for doing so. Instead, it was no more than an indication of how fees would be calculated.

That distinction proved fatal to the client’s argument. As the Court confirmed, even following statutory amendments allowing CBAs to be based on hourly rates, the longstanding requirement for certainty has not been displaced.

Why This Matters: Substance Over Form

One of the most important aspects of the judgment is its emphasis on substance rather than labels.

It is not enough that:

• a retainer is in writing; or
• it refers to hourly rates; or
• it appears to deal with remuneration.

For a CBA to exist, the agreement must truly define how fees are to be fixed, such that both parties know where they stand.

This reflects an established line of authority (dating back to Chamberlain v Boodle & King), which continues to influence modern costs litigation.

Practical Implications for Law Firms

The judgment carries several practical lessons for law firms, particularly those engaged in contentious work.

Avoid “Halfway House” Agreements

Many client care letters sit somewhere between:

• a fully defined contractual pricing arrangement, and
• a flexible, hourly rate-based billing model.

Barnes shows that hybrid arrangements may fall between two stools, failing to qualify as CBAs while still leaving room for dispute.

Certainty Requires More Than Rates

Simply listing hourly rates is not enough. Consider whether your engagement terms:

• identify clearly who may charge time;
• define how and when rates may increase;
• provide a mechanism for assessing cost-effectiveness (if relied upon);
• minimise ambiguity in the billing structure.

Absent these features, the agreement may not achieve the legal effect intended.

Think Strategically About Classification

In some cases, firms may prefer:

• the certainty of enforcement (i.e. the ability to sue for fees); or
• the security of a binding CBA (limiting later assessment challenges).

The drafting of the retainer should reflect that strategic choice. The worst outcome is often uncertainty.

Implications for Clients

Although the decision ultimately favoured the firm, it also provides useful guidance for clients:

• Clients should not assume that a written retainer automatically grants statutory protection;
• The availability of remedies under the Solicitors Act will depend on careful legal analysis of the agreement’s terms;
• Challenges to fees based on classification arguments may face a high threshold where the agreement lacks precision.

A Wider Trend in Costs Litigation?

The decision sits within a broader trend of increased scrutiny in solicitor-client costs disputes.

Recent cases have similarly emphasised:

• the importance of clear contractual drafting;
• the limits of statutory protections where agreements are imprecise;
• the continued relevance of traditional contractual principles (particularly certainty).

In that sense, Barnes is less a departure and more a reaffirmation of orthodox principles, applied in a modern billing context.

Conclusion

Broadfield Law v Barnes provides a clear and practical message: not every retainer is a contract on costs, and not every contract on costs is a Contentious Business Agreement.

For solicitors, the key takeaway is straightforward:

• If you want certainty in recovering fees, draft for it.
• If you want the benefits of a statutory regime, ensure the agreement meets its requirements.

Either way, ambiguity is the real enemy.

How We Can Help

At Davis Woolfe, we regularly advise both law firms and clients on:

• disputed legal fees and costs recovery;
• solicitor-own client assessments;
• drafting and reviewing retainers and fee agreements;
• strategic positioning in high-value costs disputes.