| Lloyds Bank plc and Bank of Scotland plc | Lloyds Banking Group | financial services | investor protection violation | 2013 | UK-FCA | £28,038,800 |
| UBS AG | UBS | financial services | investor protection violation | 2012 | UK-FSA | £29,700,000 |
| TSB Bank plc | Banco de Sabadell | financial services | internal controls deficiency | 2022 | UK-FCA | £29,750,000 |
| Standard Life Assurance Limited | Phoenix Group Holdings PLC | financial services | investor protection violation | 2019 | UK-FCA | £30,792,500 |
| Santander UK plc | Banco Santander | financial services | banking violation | 2018 | UK-FCA | £32,817,800 |
| J.P. Morgan Securities Ltd. | JPMorgan Chase | financial services | investor protection violation | 2010 | UK-FSA | £33,320,000 |
| Goldman Sachs International | Goldman Sachs | financial services | investor protection violation | 2019 | UK-FCA | £34,344,700 |
| Merrill Lynch International | Bank of America | financial services | investor protection violation | 2017 | UK-FCA | £34,524,000 |
| Barclays Bank plc | Barclays | financial services | investor protection violation | 2014 | UK-FCA | £37,745,000 |
| Commerzbank AG | Commerzbank | financial services | anti-money-laundering deficiencies | 2020 | UK-FCA | £37,805,400 |
| Royal Bank of Scotland Plc and National Westminster Bank Plc and Ulster Bank Plc | NatWest Group PLC | financial services | banking violation | 2014 | UK-FCA | £42,000,000 |
| Citigroup Global Markets Limited, Citibank N.A. London branch and Citibank Europe Plc UK branch | Citigroup | financial services | internal controls deficiency | 2019 | UK-PRA | £43,890,000 |
| G4S Care and Justice Services (UK) Ltd | Allied Universal Security Services | business services | fraud | 2020 | UK-SFO | £44,400,000 |
| Bank of Scotland | Lloyds Banking Group | financial services | banking violation | 2019 | UK-FCA | £45,500,000 |
| Standard Chartered Bank | Standard Chartered | financial services | internal controls deficiency | 2021 | UK-PRA | £46,550,000 |
| Goldman Sachs International | Goldman Sachs | financial services | investor protection violation | 2020 | UK-FCA | £48,308,400 |
| Goldman Sachs International | Goldman Sachs | financial services | risk management failure | 2020 | UK-PRA | £48,308,400 |
| HSBC Bank plc and HSBC UK Bank plc | HSBC | financial services | internal controls deficiency | 2024 | UK-PRA | £57,417,500 |
| HSBC Bank plc | HSBC | financial services | anti-money-laundering deficiencies | 2021 | UK-FCA | £63,946,800 |
| Lloyds Bank plc and Bank of Scotland plc and The Mortgage Business plc | Lloyds Banking Group | financial services | mortgage abuses | 2020 | UK-FCA | £64,046,800 |
| Barclays Bank plc | Barclays | financial services | anti-money-laundering deficiencies | 2015 | UK-FCA | £72,069,400 |
| Credit Suisse International and Credit Suisse Securities (Europe) Ltd | UBS | financial services | internal controls deficiency | 2023 | UK-PRA | £87,082,000 |
| Serco Geografix Ltd | Serco Group | miscellaneous services | fraud | 2019 | UK-SFO | £91,400,000 |
| Standard Chartered Bank | Standard Chartered | financial services | anti-money-laundering deficiencies | 2019 | UK-FCA | £102,163,200 |
| Santander UK Plc | Banco Santander | financial services | anti-money-laundering deficiencies | 2022 | UK-FCA | £107,793,300 |
| The Bank of New York Mellon International Limited et al. | Bank of New York Mellon | financial services | investor protection violation | 2015 | UK-FCA | £126,000,000 |
| Tesco Stores Limited | Tesco PLC | retailing | accounting fraud or deficiencies | 2019 | UK-SFO | £132,000,000 |
| JPMorgan Chase Bank N.A. | JPMorgan Chase | financial services | investor protection violation | 2013 | UK-FCA | £137,610,000 |
| Deutsche Bank AG | Deutsche Bank | financial services | anti-money-laundering deficiencies | 2017 | UK-FCA | £163,076,224 |
| National Westminster Bank plc | NatWest Group PLC | financial services | anti-money-laundering deficiencies | 2021 | UK-FCA | £264,772,619 |
| Credit Suisse | UBS | financial services | banking violation | 2021 | UK-FCA | £292,209,276 |
| Link Fund Solutions | | | investor protection violation | 2024 | UK-FCA | £298,404,919 |
