BankConductIndex

Issues ›

Service failure

Errors, delays and poor communication that do not fit a more specific category.

17,589banking decisions on this issue
43.0%upheld where an outcome is recorded
40firms with 20+ decisions here

Rules the ombudsman applied

Derived from the rules actually cited in these decisions, ranked by how often they appear — not from an editorial view of which rules matter.

Consumer Credit Act 1974 · cited in 390

Consumer credit rights, including Section 75 joint liability for card purchases.

Read the instrument

FCA DISP (Dispute Resolution) · cited in 222

How firms must handle complaints and how the Ombudsman decides them.

Read the instrument

Equality Act 2010 · cited in 185

Duties toward customers with protected characteristics, including reasonable adjustments.

Read the instrument

FCA Consumer Duty (PRIN 2A) · cited in 121

Requires firms to deliver good outcomes for retail customers.

Read the instrument

Payment Services Regulations 2017 · cited in 86

Governs how payment firms must handle authorised and unauthorised payments, including liability for unauthorised transactions.

Read the instrument

FCA CONC (Consumer Credit sourcebook) · cited in 48

Conduct rules for consumer credit, including affordability and arrears handling.

Read the instrument

Which firms lose on this

FirmDecisionsUpheldUphold rate
Santander UK Plc90237641.7%
Bank of Scotland Plc82026932.8%
National Westminster Bank Plc79930337.9%
Lloyds Bank PLC74825434.0%
Barclays Bank UK PLC73839353.3%
Barclays Bank Plc70424134.2%
Nationwide Building Society67027440.9%
HSBC UK Bank Plc52525448.4%
TSB Bank plc46524252.0%
HSBC Bank plc44417038.3%
Clydesdale Bank Plc27611943.1%
National Savings and Investments1286752.3%
Co-operative Bank Financial Advisers Limited1286450.0%
Metro Bank PLC1236956.1%
NewDay Ltd1067671.7%
American Express Services Europe Limited935458.1%
Halifax Limited782025.6%
MONZO BANK LIMITED784861.5%
Bank of Ireland (UK) Plc764761.8%
Tesco Personal Finance Limited744459.5%
Revolut Limited624775.8%
Virgin Money plc582339.7%
Yorkshire Building Society562850.0%
MBNA Limited511835.3%
RBS Collective Investment Funds Limited491734.7%
Sainsbury's Bank Plc483062.5%
Starling Bank Limited461839.1%
Erudio Student Loans Limited463371.7%
Shop Direct Finance Company Limited462247.8%
Volkswagen Financial Services (UK) Limited452760.0%
Vanquis Bank Limited433376.7%
Lloyds TSB Bank Plc421535.7%
Capital One (Europe) plc412151.2%
Creation Consumer Finance Limited372464.9%
Skipton Building Society341338.2%
NATIONAL WESTMINSTER BANK PUBLIC LIMITED COMPANY331442.4%
Shawbrook Bank Limited322062.5%
MARKS AND SPENCER FINANCIAL SERVICES PLC311651.6%
Creation Financial Services Limited311858.1%
NRAM Limited301343.3%

Firms with fewer than 20 decisions on this issue are excluded — the rate would not mean anything.

In the ombudsman’s words

Mrs A complains that Credit Solutions Limited gave her conflicting advice on the amount she would need to pay to settle an outstanding debt.
— decision DRN9999799, Credit Solutions Limited
it’s unfair and unreasonable for NRAM to call and leave messages on the wrong number for Mrs M and Mr M.
— decision DRN9998158, NRAM Limited
Mr M is unhappy that Arrow didn’t implement the final decision within the timeframe given, and that it didn’t respond when he chased it up.
— decision DRN9997342
AMEX apologised for its poor service and said it would provide feedback to the relevant business areas on Mr L’s experience. It accepted that an error had been made in the process it had followed, and that its employee had requested the wrong information from Mr L.
— decision DRN9990871, American Express Services Europe Limited

Quotes are shown only where the exact wording was verified against the decision text.

The US counterpart

The Consumer Financial Protection Bureau (CFPB) runs a separate complaint database for American consumers. We map its issue labels onto this issue ourselves — the CFPB does not — and the two datasets are not comparable: UK figures above are ombudsman decisions with an adjudicated outcome, while these are complaints made to a US regulator, most of which are never adjudicated. A count of one is not a count of the other, so no rate, percentage or ratio is calculated between them.

The CFPB recorded 37,561 complaints mapped to this issue, received between April 2025 and October 2026, across all US consumer financial products.

Most common CFPB issue labels within this mapping:

Managing an account — 37,561 complaints

Source: CFPB Consumer Complaint Database, not scoped to banking — the CFPB’s complaint categories span all consumer financial products, not just banking.