| Barclays Bank plc | Barclays | financial services | foreign exchange market manipulation | 2015 | UK-FCA | £284,432,000 |
| Deutsche Bank AG | Deutsche Bank | financial services | interest rate benchmark manipulation | 2015 | UK-FCA | £226,800,000 |
| Consultant Eye Surgeons Partnership (CESP) Ltd. | | | price-fixing or anti-competitive practices | 2015 | UK-CMA | £382,500 |
| Hamptons Estates Ltd. and Countrywide plc and Countrywide Group plc | | | price-fixing or anti-competitive practices | 2015 | UK-CMA | £582,455 |
| Trinity Mirror Southern Ltd. and Trinity Mirror plc | | | price-fixing or anti-competitive practices | 2015 | UK-CMA | £91,257 |
| Waterfords (Estate Agents) Limited | | | price-fixing or anti-competitive practices | 2015 | UK-CMA | £46,186 |
| Castles Property Services Limited | | | price-fixing or anti-competitive practices | 2015 | UK-CMA | £17,348 |
| Three Counties Estate Agents Limited | | | price-fixing or anti-competitive practices | 2015 | UK-CMA | £90 |
| E.ON UK Plc and E.ON Energy Solutions Ltd. | E.ON | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £7,000,000 |
| Intergen | | | energy market violation | 2015 | UK-OFGEM | £11,000,000 |
| Drax PowerLimited | Drax Group PLC | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £25,000,000 |
| British Gas | Centrica | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £10,600,000 |
| ScottishPower Energy Retail Limited and ScottishPower Generation Limited | Iberdrola | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £2,400,000 |
| SSE plc | SSE PLC | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £1,750,000 |
| British Gas | Centrica | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £500,000 |
| GDF Suez/IPM | Engie | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £450,000 |
| ICBC Standard Bank Plc | Industrial and Commercial Bank of China | financial services | bribery | 2015 | UK-SFO | £21,730,000 |
| Adret Ltd and Berangere Ltd | | | energy market violation | 2015 | UK-OFGEM | £0 |
| SSE | SSE PLC | utilities and power generation | energy market violation | 2015 | UK-OFGEM | £100,000 |
| UK Capacity Reserve | | | energy market violation | 2015 | UK-OFGEM | £0 |
| East Midlands International Airport Ltd | | | price-fixing or anti-competitive practices | 2016 | UK-CAA | £0 |
| Prestige Parking Ltd | | | price-fixing or anti-competitive practices | 2016 | UK-CAA | £0 |
| B Limited | | | bribery | 2016 | UK-COPFS | £2,200,000 |
| Tesco | Tesco PLC | retailing | Groceries Supply Code of Conduct violation | 2016 | UK-GCA | £0 |
| British Gas Trading Limited | Centrica | utilities and power generation | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| E.ON Energy Solutions Limited | E.ON | utilities and power generation | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| EDF Energy Customers plc | EDF-Electricite de France | utilities and power generation | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| Npower Group plc | E.ON | utilities and power generation | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| Scottish Power Energy Retail Limited | Iberdrola | utilities and power generation | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| Southern Electric Gas Limited | OVO Energy | utilities and power generation | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| CST Industries (UK) Ltd. and CST Industries Inc. | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| Franklin Hodge Industries Ltd. and Carter Thermal Industries Ltd. | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £2,015,135 |
| Galglass Ltd. Irish Industrial Tanks Ltd. and Kernoff Ltd. | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £587,926 |
| KW Supplies Ltd. | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £22,248 |
| Storm Model Management Limited and Storm Models Limited | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £491,000 |
| Models One Ltd. and One Worldwide Ltd. and Models 1 New Co Ltd. | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £394,000 |
| FM Model Agency Limited | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £251,000 |
| Viva Model Management London Limited and Viva Model Management Sarl | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £245,000 |
| Premier Model Management Limited | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £150,000 |
| The Association of Model Agents Limited | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £2,500 |
| GB eye Limited | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £0 |
| Trod Limited | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £163,371 |
| ITW Limited | Illinois Tool Works | industrial equipment | price-fixing or anti-competitive practices | 2016 | UK-CMA | £2,298,820 |
| Ultra Finishing Limited | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £786,668 |
| GlaxoSmithKline plc and GlaxoSmithKline UK Ltd. and SmithKline Beecham Ltd. and Beecham Group plc | GlaxoSmithKline | pharmaceuticals | price-fixing or anti-competitive practices | 2016 | UK-CMA | £22,000,000 |
| Generics (UK) Ltd and Merck KGaA | | | price-fixing or anti-competitive practices | 2016 | UK-CMA | £5,841,286 |
| Actavis UK Ltd. | Intas Pharmaceuticals Ltd. | pharmaceuticals | price-fixing or anti-competitive practices | 2016 | UK-CMA | £1,542,860 |
| SSE plc | SSE PLC | utilities and power generation | price-fixing or anti-competitive practices | 2016 | UK-OFGEM | £0 |
| Sweett Group PLC | | | bribery | 2016 | UK-SFO | £2,250,000 |
| Smith and Ouzman Ltd | | | bribery | 2016 | UK-SFO | £2,200,000 |
| National Grid | National Grid | utilities and power generation | energy market violation | 2016 | UK-OFGEM | £3,000,000 |
| Showmen's Guild of Great Britain | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £0 |
| ATG Media | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £0 |
| John Wood Group PLC | Wood Group | oilfield services and supplies | bribery | 2017 | UK-COPFS | £6,460,000 |
| Berendsen Cleanroom Services Ltd. fka Micronclean (Newbury) Ltd. and Berendsen plc | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £1,197,956 |
| Micronclean Ltd. fka Fenland Laundries Ltd. | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £510,118 |
| Ping Europe Limited | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £1,450,000 |
| Turner Topco Ltd. and ATG Media Holdings Ltd. and ATG Media Ltd. and Metropress Ltd. | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £0 |
| Annagram Estates Limited dba CJ Hole | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £0 |
| Greenslade Taylor Hunt | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £170,549 |
| Gary Berryman Estate Agents Ltd. and Warne Investments Ltd. | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £93,555 |
| West Coast Property Services (UK) Limited | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £55,624 |
| Abbott and Frost Estate Agents Limited | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £30,099 |
| Saxons PS Limited | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £20,257 |
| The National Lighting Co. Ltd. and Saxby Lighting Ltd. and Endon Lighting Ltd. and Poole Lighting Ltd. | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £2,763,000 |
| BHK (UK) Ltd. and BHK Holz-u Kunststoff KG | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £0 |
| Thomas Armstrong (Timber) Ltd. and Thomas Armstrong (Holdings) Limited | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £1,509,000 |
| Thomas Armstrong (Timber) Ltd. and Thomas Armstrong (Holdings) Limited | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £684,000 |
| Hoffman Thornwood Ltd. and Consolidated Timer Holdings Ltd. | | | price-fixing or anti-competitive practices | 2017 | UK-CMA | £625,000 |
| British Telecommunications plc | BT | telecommunications | price-fixing or anti-competitive practices | 2017 | UK-OFCOM | £300,000 |
| British Telecommunications plc | BT | telecommunications | price-fixing or anti-competitive practices | 2017 | UK-OFCOM | £42,000,000 |
| Utilita | | | consumer protection violation | 2017 | UK-OFGEM | £3,580,000 |
| British Gas Trading Limited | Centrica | utilities and power generation | energy market violation | 2017 | UK-OFGEM | £4,500,000 |
| Rolls-Royce PLC | Rolls-Royce | aerospace and military contracting | bribery | 2017 | UK-SFO | £510,250,000 |
| Heathrow T5 Ltd. and Arora Holdings Ltd. | | | price-fixing or anti-competitive practices | 2018 | UK-CMA | £0 |
| Heathrow Airport Ltd. and Heathrow Airport Holdings Ltd. | Heathrow Airport Holdings | miscellaneous services | price-fixing or anti-competitive practices | 2018 | UK-CMA | £1,600,000 |
| CPL Distribution Limited and CPL Industries Holdings Limited | | | price-fixing or anti-competitive practices | 2018 | UK-CMA | £2,816,514 |
| Fuel Express Ltd. and Fuel Express (Bagnalls) Ltd. and Carbo (UK) Ltd. and G.N. Grosvenor Ltd. | | | price-fixing or anti-competitive practices | 2018 | UK-CMA | £627,867 |
| Royal Mail plc | International Distributions Services PLC | miscellaneous services | price-fixing or anti-competitive practices | 2018 | UK-OFCOM | £50,000,000 |
| Hudson Energy Supply UK Ltd | | | consumer protection violation | 2018 | UK-OFGEM | £477,039 |
| npower Direct Ltd. and npower Ltd. and npower Northern Ltd. and npower Yorkshire Ltd. | E.ON | utilities and power generation | energy market violation | 2018 | UK-OFGEM | £2,400,000 |
| Alstom Power Ltd | GE Vernova | industrial equipment | bribery | 2018 | UK-SFO | £18,038,000 |
| EDF Energy | EDF-Electricite de France | utilities and power generation | energy market violation | 2018 | UK-OFGEM | £350,000 |
| Co-operative Group Limited | Co-operative Group Limited | retailing | Groceries Supply Code of Conduct violation | 2019 | UK-GCA | £0 |
| The Romans Group (UK) Limited and Romans 1 Limited | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £0 |
| Prospect Estate Agency Limited and Prospect Holdings (Reading) Limited | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £268,765 |
| Richard Worth Limited and Richard Worth Holdings Limited | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £193,911 |
| Michael Hardy & Company (Wokingham) Limited and Geocharbert UK Ltd | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £142,843 |
| Stanton Bonna Concrete Limited et al. | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £7,474,745 |
| CPM Group Limited | Marshalls PLC | building materials | price-fixing or anti-competitive practices | 2019 | UK-CMA | £4,000,000 |
| Casio Electronics Co. Ltd. and Casio Computer Co., Ltd. | Casio Computer Co. | miscellaneous manufacturing | price-fixing or anti-competitive practices | 2019 | UK-CMA | £3,695,535 |
| Bluu Solutions Ltd and Bluuco Ltd. and Tetris Projects Ltd. and Jones Lang LaSalle Inc. | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £0 |
| Area Sq Ltd. and Cube Interior Solutions Ltd. and Fourfront Group Ltd. and Fourfront Holdings Ltd. | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £4,143,304 |
| ThirdWay Interiors Ltd. and The ThirdWay Group | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £1,780,703 |
| Loop Interiors London LLP and Loop Interiors Ltd. | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £1,090,816 |
| Oakley Interiors Ltd. | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £58,558 |
| Coriolis Projects Ltd. | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £7,735 |
| Fender Musical Instruments Europe Limited | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £25,000 |
| Balmoral Tanks Ltd. and Balmoral Group Holdings Ltd. | | | price-fixing or anti-competitive practices | 2019 | UK-CMA | £130,000 |
| Royal Mail Group plc | International Distributions Services PLC | miscellaneous services | price-fixing or anti-competitive practices | 2019 | UK-OFCOM | £0 |
| Salegroup Limited (The) | | | price-fixing or anti-competitive practices | 2019 | UK-OFCOM | £40,000 |
