Single Joint Expert in Business Valuation: A Solicitor's Guide
What is a Single Joint Expert?
A Single Joint Expert (SJE) is one expert instructed jointly by both parties - or appointed by the court - to provide a single valuation report shared by all parties. In business valuation disputes, SJEs are used in civil proceedings under CPR 35.7 and family proceedings under FPR 25.11.
The SJE owes duties to both parties and the court. Costs are typically shared equally unless the court orders otherwise.
When courts order SJE appointment
Courts favour SJEs where expert costs would be disproportionate, issues are narrow, or parties agree on joint instruction. Case management directions may specify the expert's identity or require parties to agree a shortlist.
High-value shareholder disputes and complex M&A litigation more often feature party-appointed experts with joint meetings - but SJE remains available where appropriate.
Joint letter of instruction
Both parties should agree a joint letter of instruction defining scope, valuation date, documents, questions, timetable, and fee arrangements. Disputes over instruction should be referred to the court promptly - experts should not proceed on conflicting instructions.
Written questions and limitations
Parties may put written questions to the SJE after the report. The SJE is not an advocate for either side - if the report is unfavourable, challenge through cross-examination or criticism of methodology, not improper pressure on the expert.
Compare SJE versus party-appointed experts on cost, control, and adversarial testing when deciding instruction strategy at the outset of litigation.
| Topic | Single Joint Expert (SJE) | Party-appointed expert (PAE) |
|---|---|---|
| Instruction | Joint letter by both parties or court appointment | Each party instructs their own expert |
| Report | One shared report | Separate reports; joint statement after meeting |
| Cost | Typically shared equally | Each party bears own expert costs (subject to costs order) |
| Best for | Lower-value or narrow disputes; court-directed economy | High-value or materially divergent valuations |
| Rules | CPR 35.7 / FPR 25.11 | CPR PD35 / FPR PD25A joint meeting process |
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