Good UK AI deployments in 2026 hit payback in 3–5 months, 200–400% year-1 ROI, and 500%+ ongoing. Below those benchmarks, the build was over-scoped or the use case was wrong. Here's what good actually looks like, by deployment type.
Real UK 2026 benchmarks for AI ROI: payback periods, year-1 net saving, year-2 onward, by deployment type and team size.