Note: This ranking is based on the parent-subsidiary linkages at the time each penalty was announced. In cases of parent name changes, the latest name is used here. The parent names are linked to Violation Tracker UK search results in which the historical parent name appears.
| Rank | Parent at the Time of Penalty | Total Penalties  | Number of Records |
|---|---|---|---|
| 1 | Airbus | $1,021,639,861 | 8 |
| 2 | Nortel Networks | $1,000,000,000 | 1 |
| 3 | NatWest Group PLC | $706,828,931 | 33 |
| 4 | Entain PLC | $637,949,362 | 10 |
| 5 | UBS | $547,645,400 | 6 |
| 6 | Barclays | $535,912,704 | 26 |
| 7 | Rolls-Royce | $510,530,500 | 7 |
| 8 | Lloyds Banking Group | $472,797,681 | 46 |
| 9 | Deutsche Bank | $397,353,826 | 12 |
| 10 | JPMorgan Chase | $397,317,447 | 5 |
| 11 | HSBC | $362,536,155 | 19 |
| 12 | Citigroup | $343,843,762 | 8 |
| 13 | Taveta Investments | $343,000,000 | 1 |
| 14 | Coats Group PLC | $329,500,000 | 2 |
| 15 | Credit Suisse | $302,327,376 | 5 |
| 16 | Glencore | $280,965,092 | 2 |
| 17 | Southern Water | $220,182,092 | 105 |
| 18 | Virgin Group | $203,149,163 | 6 |
| 19 | National Grid | $197,439,938 | 18 |
| 20 | BT | $188,223,913 | 61 |
| 21 | Thames Water Utilities Ltd. | $178,978,694 | 99 |
| 22 | Banco Santander | $173,508,602 | 9 |
| 23 | Standard Chartered | $169,185,010 | 3 |
| 24 | Tesco PLC | $169,163,749 | 58 |
| 25 | Goldman Sachs | $148,491,500 | 5 |
| 26 | Intas Pharmaceuticals Ltd. | $132,882,238 | 2 |
| 27 | Serco Group | $128,498,118 | 15 |
| 28 | Bank of New York Mellon | $126,009,465 | 2 |
| 29 | Wood Group | $109,474,158 | 5 |
| 30 | Kelda Group | $108,988,228 | 95 |
| 31 | Rabobank | $105,000,000 | 1 |
| 32 | KPMG | $93,729,645 | 40 |
| 33 | International Airlines Group | $81,522,460 | 30 |
| 34 | Dwr Cymru Cyfyngedig (Welsh Water) | $79,837,298 | 235 |
| 35 | Petrofac Limited | $77,034,625 | 5 |
| 36 | Pfizer | $63,300,000 | 1 |
| 37 | Chemtura | $60,000,000 | 2 |
| 38 | International Distributions Services PLC | $58,344,192 | 78 |
| 39 | Meta Platforms Inc. | $52,500,000 | 8 |
| 40 | Connect Airways | $51,885,049 | 1 |
| 41 | Nordic Capital | $51,502,933 | 5 |
| 42 | PricewaterhouseCoopers | $48,933,872 | 13 |
| 43 | Banco de Sabadell | $48,650,000 | 3 |
| 44 | Monarch Airlines Limited | $48,154,044 | 1 |
| 45 | Bank of America | $47,811,516 | 4 |
| 46 | E.ON | $47,731,454 | 16 |
| 47 | Centrica | $45,553,894 | 27 |
| 48 | G4S | $44,434,118 | 6 |
| 49 | Cadent Gas Limited | $44,000,000 | 10 |
| 50 | Cinven Group | $41,956,620 | 2 |
| 51 | RWE AG | $41,545,529 | 10 |
| 52 | Deloitte | $39,360,714 | 13 |
| 53 | Commerzbank | $38,701,084 | 3 |
| 54 | SSE plc | $37,986,895 | 34 |
| 55 | 888 Holdings PLC | $36,436,779 | 6 |
| 56 | Iberdrola | $33,297,467 | 9 |
| 57 | Go-Ahead Group PLC | $33,042,066 | 23 |
| 58 | Network Rail | $32,405,066 | 158 |
| 59 | MasterCard | $31,560,062 | 1 |
| 60 | Drax Group PLC | $31,137,651 | 8 |
| 61 | Phoenix Group Holdings PLC | $30,812,925 | 22 |
| 62 | Homeserve plc | $30,647,400 | 1 |
| 63 | BAE Systems | $30,184,731 | 22 |
| 64 | Prudential plc | $30,073,776 | 22 |
| 65 | Currys PLC | $30,031,641 | 8 |
| 66 | National Australia Bank | $29,582,800 | 3 |
| 67 | Rio Tinto | $27,385,400 | 1 |
| 68 | Metro Bank PLC | $26,799,073 | 4 |
| 69 | Mitsubishi UFJ Financial Group | $26,775,000 | 2 |
| 70 | Aviva PLC | $25,884,014 | 37 |
| 71 | FP McCann Limited | $25,600,176 | 15 |
| 72 | H.I.G. Capital | $25,000,000 | 2 |
| 73 | M&G PLC | $23,875,000 | 1 |
| 74 | State Street Corp. | $22,885,000 | 1 |
| 75 | GlaxoSmithKline | $22,055,000 | 5 |
| 76 | Industrial and Commercial Bank of China | $21,730,000 | 1 |
| 77 | EDF-Electricite de France | $20,299,431 | 20 |
| 78 | Invesco | $18,652,310 | 2 |
| 79 | General Electric | $18,595,530 | 6 |
| 80 | Marriott International | $18,473,182 | 3 |
| 81 | Julius Baer Group | $18,022,500 | 1 |
| 82 | Grant Thornton | $16,957,067 | 18 |
| 83 | Weir Group PLC | $16,900,000 | 1 |
| 84 | Vanquis Banking Group | $16,781,400 | 4 |
| 85 | Alstom | $16,402,384 | 3 |
| 86 | TP ICAP PLC | $15,469,682 | 2 |
| 87 | OVO Energy | $14,950,379 | 6 |
| 88 | ICAP PLC | $14,000,000 | 1 |
| 89 | Caesars Entertainment Corp. | $13,990,000 | 2 |
| 90 | J Sainsbury PLC | $13,620,269 | 21 |
| 91 | ByteDance | $12,700,000 | 1 |
| 92 | PayPoint Group | $12,500,000 | 1 |
| 93 | Telefonica | $12,010,000 | 4 |
| 94 | Equifax | $11,664,400 | 2 |
| 95 | Holtzbrinck Publishing Group | $11,263,852 | 1 |
| 96 | Reckitt Benckiser | $10,923,421 | 5 |
| 97 | Tata Group | $10,008,821 | 63 |
| 98 | BlackRock | $9,533,462 | 3 |
| 99 | William Hill plc | $9,291,614 | 4 |
| 100 | Nationwide Building Society | $9,245,708 | 8 |
