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Cross-sector dashboardMethodology
UK consumer complaint index

Who do customers actually complain about?

Every figure on this site is a verbatim regulator number with full attribution. No fudging, no modelling. Pick a sector below to see the league table - or read the methodology first.

Cross-sector dashboardHow we score

Data last updated: UK regulators (Ofcom, Ofgem, CAA)

Sectors live
6

Across telecoms, energy & aviation

Refreshed
Quarterly

Crons run after every regulator publication

Licence
OGL v3.0

Republish freely with attribution

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The cross-sector dashboard

Best and worst providers across aviation, telecoms and energy in one place. Tabs for each sector, top-5 winners and top-5 worst - refreshed every quarter.

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Each league table is sourced verbatim from its regulator’s published dataset.

Methodology →

Complaining about a company in these tables?

Describe what happened and we’ll draft the letter - free to start.

Draft my complaint

Public methodology, no secret sauce

Every star, badge and ranking on the index is computed from the same regulator data you can download. The full formula is public - if you have the source numbers, you can reproduce every figure on this site.

Read methodology

All figures sourced from UK regulators under Open Government Licence v3.0 unless noted. Numbers are verbatim from the regulator’s published dataset; composite scores are computed using the public methodology at /data/methodology. Spot an error? Email index@usenoreply.com.