RELX PLC — Business Economics
Ticker: RELX | Primary listing: LSE (GBP); ADR on NYSE (USD)
RELX is one of the highest-quality compounding machines in global equities — a data and analytics business disguised by its legacy description as a "publisher." The economic engine is simple and powerful: assemble proprietary datasets that are prohibitively expensive to replicate, embed analytical tools into customers' daily workflows, and charge recurring subscriptions that grow with usage. Over 85% of revenue is now electronic, and roughly three-quarters is recurring or subscription-based.
How it makes money. RELX operates four segments, each with distinct economics. The most recent full-year data is FY2024 (year ended December 31, 2024), sourced from the 20-F filed February 2025.
| Segment | Revenue (~) | Organic Growth | Adj. OP Margin | Role |
|---|---|---|---|---|
| Risk & Business Analytics | ~£3.9bn (41%) | ~10% | ~39% | Fraud detection, identity verification, insurance analytics (LexisNexis Risk Solutions) |
| Scientific, Technical & Medical | ~£3.1bn (33%) | ~4% | ~37% | Academic publishing, research databases (Elsevier, ScienceDirect, Scopus) |
| Legal | ~£1.7bn (18%) | ~6% | ~25% | Legal research & analytics (LexisNexis) |
| Exhibitions | ~£0.7bn (8%) | ~6% | ~30% | Face-to-face trade shows globally |
| Total | ~£9.4bn | ~7% | ~36% |
The engine is strengthening, not weakening. The critical trend is the ongoing mix shift toward Risk & Business Analytics, which now accounts for over 40% of revenue and carries the highest margins and fastest growth. This segment benefits from structural tailwinds — rising digital fraud, regulatory KYC/AML requirements, and insurance carriers needing better predictive analytics. Each new data source integrated into the platform increases its value to customers (a flywheel effect). The segment has compounded organic growth at ~8-10% for a decade with no sign of deceleration.
Win-win dynamics. RELX's model genuinely creates value for counterparties. Insurers price risk more accurately. Researchers access the literature more efficiently. Lawyers find precedent faster. The one area of legitimate tension is academic publishing — Elsevier's subscription pricing and the open-access movement create friction with universities and funding bodies. This is a real but manageable structural risk; Elsevier has been transitioning to hybrid/open-access models, and its dominance in research tools (Scopus, SciVal) provides resilience beyond pure journal access.
No signs of deterioration. Every segment is growing organically. Customer retention rates across the platform are consistently above 90%. The transition from print to digital is essentially complete, removing a historic drag. Capital expenditure is low relative to revenue (~7-8%), and free cash flow conversion from adjusted operating profit is consistently above 90%.
Key metrics to track: (1) organic revenue growth by segment — particularly Risk Analytics staying above high-single-digits; (2) adjusted operating profit margin expansion as mix continues shifting toward higher-margin segments; (3) electronic revenue as a percentage of total; (4) free cash flow conversion ratio. If Risk Analytics organic growth were to fall below 5% or STM margins contracted sharply due to open-access disruption, the thesis would need re-examination.