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