| 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 |
| Marks and Spencer plc | Marks and Spencer Group PLC | retailing | price-fixing or anti-competitive practices | 2023 | UK-CMA | £0 |
| Wm Morrison Supermarkets Limited | Clayton Dubilier & Rice | private equity (including portfolio companies) | price-fixing or anti-competitive practices | 2023 | UK-CMA | £0 |
| Copart, Inc. and CPRT LLP and Copart UK Ltd. | Copart Inc. | information services | price-fixing or anti-competitive practices | 2023 | UK-CMA | £2,500,000 |
| Education Software Solutions Limited | | | price-fixing or anti-competitive practices | 2023 | UK-CMA | £0 |
| DFDS A/S | | | price-fixing or anti-competitive practices | 2022 | UK-CMA | £0 |
| P&O Ferries Holdings Limited | | | price-fixing or anti-competitive practices | 2022 | UK-CMA | £0 |
| Moto Hospitality Limited | | | price-fixing or anti-competitive practices | 2022 | UK-CMA | £0 |
| Moto Holdings Limited | | | price-fixing or anti-competitive practices | 2022 | UK-CMA | £0 |
| Roadchef Limited | Macquarie | financial services | price-fixing or anti-competitive practices | 2022 | UK-CMA | £0 |
| Extra MSA Property (UK) Limited | | | price-fixing or anti-competitive practices | 2022 | UK-CMA | £0 |
| Google | Alphabet Inc. | information technology | price-fixing or anti-competitive practices | 2022 | UK-CMA | £0 |
| 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 |
| Advanz Pharma | Nordic Capital | private equity (including portfolio companies) | price-fixing or anti-competitive practices | 2021 | UK-CMA | £40,900,000 |
| Waymade Plc | | | price-fixing or anti-competitive practices | 2021 | UK-CMA | £2,500,000 |
| Bank of Ireland UK plc | Bank of Ireland | financial services | banking violation | 2021 | UK-CMA | £0 |
| Monzo Bank Limited | | | banking violation | 2021 | UK-CMA | £0 |
| NatWest Group | NatWest Group PLC | financial services | banking violation | 2021 | UK-CMA | £0 |
| Virgin Money UK plc | Virgin Money UK PLC | financial services | banking violation | 2021 | UK-CMA | £0 |
| Roland (U.K.) Limited and Roland Corp. | | | price-fixing or anti-competitive practices | 2021 | UK-CMA | £5,004,151 |
| Lexon (UK) Limited | Bestway Healthcare | healthcare services | price-fixing or anti-competitive practices | 2021 | UK-CMA | £1,220,383 |
| FP McCann Limited | FP McCann Limited | construction and engineering | price-fixing or anti-competitive practices | 2020 | UK-CMA | £25,449,676 |
| Essential Pharma | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £0 |
| Mabey Hire Ltd | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £0 |
| Vp plc | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £11,235,660 |
| M.G.F (Trench Construction Systems) Ltd | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £3,773,910 |
| Hanson UK | HeidelbergCement | building materials | price-fixing or anti-competitive practices | 2020 | UK-CMA | £0 |
| H.J. Enthoven Limited and Eco-Bat Technologies Limited | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £8,076,504 |
| Associated Lead Mills Limited and Royston Sheet Lead Limited and International Metal Industries Limited | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £1,510,228 |
| Yamaha Music Europe GmbH | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £0 |
| GAK.co.uk Ltd. and The Guitar, Amp & Keyboard Centre Ltd. and GAK.co.uk (Holdings) Ltd. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £278,945 |
| Amilco Ltd. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £0 |
| Aspen Pharmacare Holdings Ltd. et al. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £10,101,954 |
| Tiofarma Beheer B.V. and Tiofarma B.V. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £186,442 |
| Spire Healthcare Ltd. and Spire Healthcare Group plc | Spire Healthcare PLC | healthcare services | price-fixing or anti-competitive practices | 2020 | UK-CMA | £1,200,000 |
| Korg (UK) Ltd. and Korg Inc. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £1,504,707 |
| Auden Mckenzie (Pharma Division) Ltd. and Accord-UK Ltd. | Intas Pharmaceuticals Ltd. | pharmaceuticals | price-fixing or anti-competitive practices | 2020 | UK-CMA | £2,882,238 |
| Alissa Healthcare Research Ltd. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £174,912 |
| King Pharmaceuticals Ltd. and Praze Consultants Ltd. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £75,573 |
| King Pharmaceuticals Ltd. and Praze Consultants Ltd. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £75,573 |
| Tesco plc | Tesco PLC | retailing | price-fixing or anti-competitive practices | 2020 | UK-CMA | £0 |
| Fender Musical Instruments Europe Ltd. and Fender Musical Instruments Corp. | | | price-fixing or anti-competitive practices | 2020 | UK-CMA | £4,531,185 |
| 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 |
| 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 |
| 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 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 |
