Is Three UK legit?

A factual composite from public reviews, official regulator records, app stores and the company’s own policies. We report evidence, not verdicts of fraud or endorsement.

Based on 3,244 public Trustpilot reviews published 2021-06-12 to 2026-09-26 — see the Trustpilot page. Not affiliated with Trustpilot or Three UK.

Trustpilot lists this business as not currently collecting reviews. See the Trustpilot page for the current status.

Three UK is an established company with 68,779 Trustpilot reviews and a 4.6 TrustScore. In our census of recent reviews, 9% were classified as complaints, most often support unhelpful, poor core service, billing errors. Elsewhere it scores 3.9★ on Google, 4.4★ on the App Store, 4.2★ on Google Play. Of 768 company replies to negative reviews analysed, 39% engaged with the specific problem.

What official records show

What goes wrong most, according to reviewers

Support unhelpful — 368 reports (45% of complaints), rising
Poor core service — 272 reports (34% of complaints)
Billing errors — 109 reports (13% of complaints)

Full evidence, quotes and trends: the Three UK complaint report.