The question behind the September numbers

The central question is how the firm raised the Revenue generated by each of its lawyers, and how far that productivity gain supports the upgraded expectations it set out for the year ending 31 January 2027, and whether the gain looks durable enough.

About the fee-share model

In a fee-share firm, the lawyers are largely self-employed principals who keep a large part of the fees they bill, and the firm takes a smaller share in return for providing infrastructure, compliance, insurance, Marketing and support. The firm's revenue is the total billed by its principals, while its costs are mainly central support rather than lawyers' salaries. That makes profit sensitive to the Volume of work principals bring in and to how many principals the firm attracts.

A fee-share platform rather than a conventional partnership

Keystone (LSE:KEYS) operates a fee-share model. Experienced lawyers, whom it calls principals, keep a share of the fees they bill, while the listed company supplies the brand, regulatory infrastructure, central support and technology. Because the firm does not carry the fixed salary costs of a traditional practice, its Earnings depend heavily on how much work each principal wins and bills. Chief executive James Knight, who founded the business, said that Keystone now competes as a quality firm in its own right rather than mainly as a lifestyle option.

What the half-year report showed

Revenue rose 23% to £66.3m from £54.2m. Adjusted pre-tax profit increased 31% to £9.6m from £7.3m, while statutory pre-tax profit climbed to £9.2m from £6.9m. The adjusted Margin improved by almost one percentage point to 14.5%, which was partly helped by interest rates being held. Net cash stood at £10.5m, about £4m higher than a year earlier. The board declared an Interim Dividend of 9.6p, up from 7.5p, plus a Special Dividend of 15p.

Where the extra output per lawyer came from

Revenue per principal rose 15% to £133,800 from £116,800, which the company attributed to solid Demand across the business, with corporate and restructuring work singled out as particularly solid. Headcount growth was relatively modest by comparison: 23 principals joined, a net gain of ten since the financial year began, taking the total to 501, while total fee earners reached 682, a net increase of 28.

The gap between 23% revenue growth and a small net rise in principals suggests that most of the increase came from higher billing per lawyer rather than recruitment. LSE:KEYS has rolled out enterprise versions of ChatGPT and Claude, a NetDocuments generative AI tool and, more recently, CoCounsel Legal. Because it cannot compel self-directed principals to use these tools, it subsidises CoCounsel and asks lawyers to pay part of the cost. The company has not quantified any productivity effect from AI.

The outlook and its dependencies

Management said it expects full-year revenue to be comfortably ahead of market expectations and profit to be materially ahead. Consensus stood at £123m revenue and £15.8m adjusted pre-tax profit, against £115.2m and £15.3m in the prior year. Those expectations rest on several conditions. Demand for corporate and restructuring advice can be cyclical, the recruitment market was described as softer with less candidate movement, and interest income on cash would fall if rates decline. Growth also depends on retaining existing principals, who can take their practices elsewhere, and on protecting the firm's reputation for quality and regulatory compliance. Special dividends are discretionary and should not be read as a recurring payment.

Arithmetic behind the half-year figures

Revenue of £66.3m divided by revenue per principal of £133,800 implies an average of about 495 principals over the half, close to the 501 reported at the period end. The adjusted margin of 14.5% matches £9.6m on £66.3m. The increase in adjusted profit of 31% outpaced revenue growth of 23%, which means profit rose faster than revenue because central costs did not grow as fast as billings.

Net cash of £10.5m, about £4m higher than a year earlier, supports the dividends declared: the interim of 9.6p and the special dividend of 15p, a total of 24.6p per share.

Growth in principals and fee earners

The 23 principals who joined in the half and the net gain of ten since the financial year began suggest that about 13 principals left in the period, a rate that is modest against a base of 501. Fee earners rose by a net 28 to 682. The relatively small increase in headcount compared with the increase in revenue is why the company points to productivity.

The role of technology

The rollout of enterprise versions of AI tools and a generative AI tool within the document management system, and more recently a legal assistant tool, aims to make lawyers more efficient. Because principals are self-directed, the firm cannot require them to use these tools, so it subsidises one of them and asks lawyers to pay part of its cost. The company has not quantified the productivity effect, so the link between technology and the gain in revenue per principal is not established by the figures.

The year-end and what a half-year means

The financial year ends on 31 January 2027, so the interim figures cover the six months to 31 July 2026. The firm's upgrade of expectations for the full year implies that the second half, including the period to 31 January, is expected to remain firm, though results depend on billing continuing at the higher rate per principal.

What the figures leave open

The results show higher billing per lawyer, but they do not separate the effect of price increases from the effect of more work, so the sources of the productivity gain are not fully known. Likewise, the company has not quantified the effect of its technology tools. Both points will be clearer when the full-year results are published.

What to watch next

The financial year closes on 31 January 2027. The key measures to watch when it next reports are whether revenue per principal holds its gains as comparisons become tougher, whether net principal additions pick up from the first-half level, and whether margin progress continues without support from interest income. In May, LSE:KEYS completed a £1.5m buyback to meet incentive plan obligations without issuing new shares.