The worst housing associations in the UK

By volume of upheld (maladministration) findings in published Housing Ombudsman determinations, London & Quadrant Housing Trust has the most — 914 adverse findings across 989 decisions, including 220 of severe maladministration. Larger landlords naturally accumulate more findings, so we also rank by maladministration rate below.

It is built entirely from the Housing Ombudsman's published determinations (16,224 decisions). The main table ranks by the number of upheld findings of maladministration; a second table ranks by maladministration rate for landlords with at least 20 decisions, which is fairer to smaller providers. We never go beyond what the Ombudsman decided, and every landlord links to its full record.

Not on its own. The biggest landlords manage hundreds of thousands of homes, so they receive — and have upheld — more complaints in absolute terms. Maladministration rate (the share of a landlord’s decisions found against it) and severe maladministration findings give a fuller picture. Use both tables together.

Directly from the Housing Ombudsman Service’s published determinations, released under the Open Government Licence v3.0. Figures update as new decisions are published. Each landlord page links back to the original determinations.