PwC: 22% of UK Legal Fee Income Is at Risk of Client Self-Service with AI — Firms Expect 16% Efficiency Gains in 2026, Up from 11% in 2025

PwC's new research — "The new rules of legal services: five moves to win as AI rewrites value" (Legal Futures, August 2) — provides the most granular current breakdown of which parts of the legal fee base are exposed to AI disruption. 22% of fees come from work that is "relatively easy to automate" and where clients are sophisticated enough to self-serve — including transactional commercial contracting and patent drafting. A further 39% of fees face moderate barriers to automation (either the work is easier to automate but clients are less able to self-serve, or vice versa); the remaining 39% have the highest barriers (complex, consumer-facing litigation; family; employment). Law firms collectively expect AI to unlock efficiency gains equal to 16% of chargeable hours in 2026, up from 11% in 2025. PwC estimates AI could deliver £6 billion of UK legal work — approximately 10% of the total UK legal market. Only a minority of firms have so far converted AI efficiency activity into monetisable gains. 53% of firms report concern that clients will use automation to reduce demand; 73% worry about keeping pace in what partners call a "tech arms race." For pricing teams: the 22%/39%/39% breakdown is the most actionable segmentation framework currently available. The implication is not that the bottom 22% of fee income disappears — it is that the pricing conversation shifts from cost-of-production to value-of-output for that 22%, and clients already have the technology to make that argument.