Section 5 — Substantial and entrenched market power

Extent: E+W+S+N.I.

This version in force from 2025-01-01

Snapshot: 2026-08-24

Reproduced from legislation.gov.uk (Crown Copyright, Open Government Licence v3.0). Amendments made after 2026-08-24 may not be reflected — always check the official text .

In order to assess whether an undertaking has substantial and entrenched market power in respect of a digital activity for the purposes of section 2(2)(a), the CMA must carry out a forward-looking assessment of a period of at least 5 years, taking into account developments that—

(a) would be expected or foreseeable if the CMA did not designate the undertaking as having SMS in respect of the digital activity, and

(b) may affect the undertaking’s conduct in carrying out the digital activity.