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 |
|---|---|---|---|
| 29 | Wood Group | $109,474,158 | 5 |
| 98 | William Hill plc | $9,291,614 | 4 |
| 82 | Weir Group PLC | $16,900,000 | 1 |
| 100 | Walmart | $9,195,242 | 17 |
| 18 | Virgin Group | $203,149,163 | 6 |
| 83 | Vanquis Banking Group | $16,781,400 | 4 |
| 5 | UBS | $547,645,400 | 6 |
| 85 | TP ICAP PLC | $15,469,682 | 2 |
| 21 | Thames Water Utilities Ltd. | $178,978,694 | 99 |
| 24 | Tesco PLC | $169,163,749 | 58 |
| 92 | Telefonica | $12,010,000 | 4 |
| 12 | Taveta Investments | $343,000,000 | 1 |
| 73 | State Street Corp. | $22,885,000 | 1 |
| 23 | Standard Chartered | $169,185,010 | 3 |
| 54 | SSE plc | $37,986,895 | 34 |
| 17 | Southern Water | $220,182,092 | 105 |
| 27 | Serco Group | $128,498,118 | 15 |
| 51 | RWE AG | $41,545,529 | 10 |
| 7 | Rolls-Royce | $510,530,500 | 7 |
| 65 | Rio Tinto | $27,385,400 | 1 |
| 95 | Reckitt Benckiser | $10,923,421 | 5 |
| 31 | Rabobank | $105,000,000 | 1 |
| 62 | Prudential plc | $30,073,776 | 22 |
| 49 | PricewaterhouseCoopers | $43,760,142 | 12 |
| 59 | Phoenix Group Holdings PLC | $30,812,925 | 22 |
| 36 | Pfizer | $63,300,000 | 1 |
| 35 | Petrofac Limited | $77,034,625 | 5 |
| 91 | PayPoint Group | $12,500,000 | 1 |
| 86 | OVO Energy | $14,950,379 | 6 |
| 2 | Nortel Networks | $1,000,000,000 | 1 |
| 41 | Nordic Capital | $51,502,933 | 5 |
| 70 | Network Rail | $25,575,066 | 49 |
| 3 | NatWest Group PLC | $706,828,931 | 33 |
| 99 | Nationwide Building Society | $9,245,708 | 7 |
| 19 | National Grid | $197,439,938 | 18 |
| 64 | National Australia Bank | $29,582,800 | 3 |
| 43 | Monarch Airlines Limited | $48,154,044 | 1 |
| 67 | Mitsubishi UFJ Financial Group | $26,775,000 | 2 |
| 66 | Metro Bank PLC | $26,799,073 | 4 |
| 39 | Meta Platforms Inc. | $52,500,000 | 8 |
| 57 | MasterCard | $31,560,062 | 1 |
| 79 | Marriott International | $18,473,182 | 3 |
| 72 | M&G PLC | $23,875,000 | 1 |
| 8 | Lloyds Banking Group | $472,797,681 | 46 |
| 32 | KPMG | $93,729,645 | 40 |
| 30 | Kelda Group | $108,988,228 | 95 |
| 80 | Julius Baer Group | $18,022,500 | 1 |
| 10 | JPMorgan Chase | $397,317,447 | 5 |
| 89 | J Sainsbury PLC | $13,620,269 | 21 |
| 77 | Invesco | $18,652,310 | 2 |
| 38 | International Distributions Services PLC | $58,344,192 | 78 |
| 33 | International Airlines Group | $81,522,460 | 30 |
| 26 | Intas Pharmaceuticals Ltd. | $132,882,238 | 2 |
| 75 | Industrial and Commercial Bank of China | $21,730,000 | 1 |
| 87 | ICAP PLC | $14,000,000 | 1 |
| 56 | Iberdrola | $33,297,467 | 9 |
| 11 | HSBC | $356,256,055 | 18 |
| 60 | Homeserve plc | $30,647,400 | 1 |
| 94 | Holtzbrinck Publishing Group | $11,263,852 | 1 |
| 71 | H.I.G. Capital | $25,000,000 | 2 |
| 81 | Grant Thornton | $16,957,067 | 18 |
| 25 | Goldman Sachs | $148,491,500 | 5 |
| 96 | Go-Ahead Group PLC | $9,554,539 | 20 |
| 16 | Glencore | $280,965,092 | 2 |
| 74 | GlaxoSmithKline | $22,055,000 | 5 |
| 78 | General Electric | $18,595,530 | 6 |
| 47 | G4S | $44,434,118 | 6 |
| 69 | FP McCann Limited | $25,600,176 | 15 |
| 93 | Equifax | $11,664,400 | 2 |
| 4 | Entain PLC | $637,949,362 | 10 |
| 76 | EDF-Electricite de France | $20,299,431 | 20 |
| 45 | E.ON | $47,731,454 | 16 |
| 34 | Dwr Cymru Cyfyngedig (Welsh Water) | $79,733,023 | 234 |
| 58 | Drax Group PLC | $31,137,651 | 8 |
| 9 | Deutsche Bank | $397,353,826 | 12 |
| 52 | Deloitte | $39,360,714 | 13 |
| 63 | Currys PLC | $30,031,641 | 8 |
| 14 | Credit Suisse | $302,327,376 | 5 |
| 40 | Connect Airways | $51,885,049 | 1 |
| 53 | Commerzbank | $38,701,084 | 3 |
| 13 | Coats Group PLC | $329,500,000 | 2 |
| 15 | Citigroup | $282,197,562 | 6 |
| 50 | Cinven Group | $41,956,620 | 2 |
| 37 | Chemtura | $60,000,000 | 2 |
| 46 | Centrica | $45,553,894 | 27 |
| 88 | Caesars Entertainment Corp. | $13,990,000 | 2 |
| 48 | Cadent Gas Limited | $44,000,000 | 10 |
| 90 | ByteDance | $12,700,000 | 1 |
| 20 | BT | $184,068,055 | 59 |
| 97 | BlackRock | $9,533,462 | 3 |
| 6 | Barclays | $535,912,704 | 26 |
| 28 | Bank of New York Mellon | $126,009,465 | 2 |
| 44 | Bank of America | $47,811,516 | 4 |
| 22 | Banco Santander | $173,508,602 | 9 |
| 42 | Banco de Sabadell | $48,650,000 | 3 |
| 61 | BAE Systems | $30,184,731 | 22 |
| 68 | Aviva PLC | $25,884,014 | 37 |
| 84 | Alstom | $16,402,384 | 2 |
| 1 | Airbus | $1,021,639,861 | 8 |
| 55 | 888 Holdings PLC | $36,436,779 | 6 |
