| Sushi Land Ltd. | | | tax violations | 2021 | UK-HMRC | £104,251 |
| Sutton McGrath Hartley Ltd | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £30,405 |
| Sutton McGrath Hartley Ltd | | | accounting fraud or deficiencies | 2016 | UK-ICAEW | £5,358 |
| Swastik Traders Ltd | | | tax violations | 2017 | UK-HMRC | £127,002 |
| Swift 1st Limited | | | mortgage abuses | 2011 | UK-FSA | £630,000 |
| Swift Insulation & Construction Ltd | | | tax violations | 2022 | UK-HMRC | £303,911 |
| Swift Real Estate Agents Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,300 |
| Swiftbooks09 | | | tax violations | 2017 | UK-HMRC | £42,205 |
| Swiss Cottage | | | tax violations | 2023 | UK-HMRC | £29,093 |
| Switch2day Limited dba Uswitch Business Telecommunications Limited | | | tax violations | 2017 | UK-HMRC | £18,672 |
| Sworder Belcher Holt Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £14,500 |
| Sworders Agricultural Commercial and Residential Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £6,100 |
| Sylhet Takeaway Limited (Formerly trading as ‘Green Chillies’) | | | tax violations | 2023 | UK-HMRC | £56,510 |
| Symor Construction Limited | | | tax violations | 2018 | UK-HMRC | £37,308 |
| Synergy Land Group Limited | | | investor protection violation | 2023 | UK-FCA | £27,000 |
| Syntax Trading Limited | | | tax violations | 2024 | UK-HMRC | £88,198 |
| T & S 2556 Ltd dba Thai Sarocha | | | tax violations | 2020 | UK-HMRC | £165,764 |
| T & S Fashions Ltd | | | tax violations | 2018 | UK-HMRC | £459,270 |
| T and T Partitioning Limited | | | tax violations | 2016 | UK-HMRC | £40,968 |
| T Broadhurst Decorators | | | tax violations | 2016 | UK-HMRC | £15,046 |
| T W Telecommunications Ltd | | | tax violations | 2017 | UK-HMRC | £1,744,452 |
| T.F. Solutions Limited | | | tax violations | 2015 | UK-HMRC | £27,470 |
| Tabern Home To Home Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £13,196 |
| Tachyon Property Service Limited EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £3,600 |
| Tacorite Trading | | | tax violations | 2018 | UK-HMRC | £61,759 |
| Tailormade Construction (NW) Ltd | | | tax violations | 2020 | UK-HMRC | £63,284 |
| Tal1 Ltd | | | tax violations | 2023 | UK-HMRC | £28,220 |
| Tan Trading Limited | | | tax violations | 2016 | UK-HMRC | £450,799 |
| Tandoor Mahal (Maidstone) Ltd | | | tax violations | 2019 | UK-HMRC | £72,757 |
| Tandoori Kitchen | | | tax violations | 2017 | UK-HMRC | £20,805 |
| Tantou Limited | | | tax violations | 2023 | UK-HMRC | £26,240 |
| Taobao London Ltd | | | tax violations | 2019 | UK-HMRC | £14,934 |
| Tap & Spile Ltd | | | tax violations | 2020 | UK-HMRC | £53,093 |
| Tap and Spile | | | tax violations | 2020 | UK-HMRC | £107,058 |
| Tara's All Nighter | | | tax violations | 2016 | UK-HMRC | £41,058 |
| Taram Ltd dba Caledonian Kebab | | | tax violations | 2019 | UK-HMRC | £178,523 |
| Tas Building Solutions Ltd | | | tax violations | 2023 | UK-HMRC | £38,267 |
| Taste Of Gurkhas Limited | | | tax violations | 2020 | UK-HMRC | £19,202 |
| Tasty Foods | | | tax violations | 2023 | UK-HMRC | £29,640 |
| Tasty Village Ltd | | | tax violations | 2023 | UK-HMRC | £28,458 |
| Tax (Made Easy) Limited ASP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £2,750 |
| Tax Expert Limited ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,500 |
| Taxation and Accountancy Solutions Limited | | | tax violations | 2021 | UK-HMRC | £197,298 |
| Taylor & Co Property Consult Ants Limited EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £14,500 |
| Taylor Made Renewable Energy Technologies Limited | | | tax violations | 2020 | UK-HMRC | £32,561 |
| Taylor Made Residential Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £6,692 |
| Taylors Avenue Developments Limited | | | tax violations | 2016 | UK-HMRC | £29,882 |
| TBTR Ltd dba The Boat That Rocks | | | tax violations | 2016 | UK-HMRC | £86,248 |
| TC Estates Limited EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £6,608 |
| TC Railways Limited | | | tax violations | 2018 | UK-HMRC | £18,450 |
| Tclass Facilities Management Limited | | | tax violations | 2023 | UK-HMRC | £38,275 |
| Team Audit Ltd | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £1,400 |
| Team N Limited EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £13,600 |
| Teams The Pizza Master Ltd | | | tax violations | 2021 | UK-HMRC | £43,970 |
| Tech Traders Ltd | | | tax violations | 2023 | UK-HMRC | £65,448 |
| Technica Group | | | tax violations | 2017 | UK-HMRC | £21,486 |
| Technofix Ltd | | | tax violations | 2021 | UK-HMRC | £27,589 |
| Techsimulater Ltd | | | tax violations | 2023 | UK-HMRC | £88,163 |
| Tejoori Limited | | | investor protection violation | 2017 | UK-FCA | £70,000 |
| Tekin Trading Ltd dba Kirve Food Centre | | | tax violations | 2019 | UK-HMRC | £59,760 |
| Telford Accountancy Services Limited ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £2,362 |
| Telia Carrier UK Limited | | | economic sanction violation | 2019 | UK-OFSI | £146,341 |
| Temple Industries Ltd dba The Temple | | | tax violations | 2018 | UK-HMRC | £23,142 |
| Temple Wharf Property Consultants Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,000 |
| Templemoyle Plastering Ltd | | | tax violations | 2021 | UK-HMRC | £26,849 |
| Templeton Robinson Commercial (NI) LLP EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £4,000 |
| Tepilo Limited | | | anti-money-laundering deficiencies | 2018 | UK-HMRC | £52,691 |
| Tequila's Limited | | | tax violations | 2020 | UK-HMRC | £349,187 |
| Tesco Personal Finance plc | Tesco PLC | retailing | privacy violation | 2018 | UK-FCA | £16,400,000 |
| Tesco Stores Limited | Tesco PLC | retailing | accounting fraud or deficiencies | 2019 | UK-SFO | £132,000,000 |
| Tex-Mex Cantina Ltd dba Cafe Sol | | | tax violations | 2016 | UK-HMRC | £63,461 |
| TFS-ICAP Ltd. | | | investor protection violation | 2020 | UK-FCA | £3,444,100 |
| Thai Orchard Restaurants Limited Thai Elephant Restaurant | | | tax violations | 2019 | UK-HMRC | £48,189 |
| Thai Sunshine Restaurant | | | tax violations | 2018 | UK-HMRC | £61,908 |
| Thaker & Co. | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £575 |
| Thameside Labour Hire London Limited | | | tax violations | 2017 | UK-HMRC | £364,424 |
| The 7 Spices (Larkhall) Ltd | | | tax violations | 2023 | UK-HMRC | £50,203 |
| The 8848 Limited | | | tax violations | 2024 | UK-HMRC | £27,049 |
| The Art Ahead Limited AMP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £1,162 |
| The Bakers Best Ltd | | | tax violations | 2024 | UK-HMRC | £25,149 |
| The Bank of New York Mellon International Limited et al. | Bank of New York Mellon | financial services | investor protection violation | 2015 | UK-FCA | £126,000,000 |
| The Barrygate | | | tax violations | 2018 | UK-HMRC | £14,867 |
| The Beach Restaurant | | | tax violations | 2018 | UK-HMRC | £51,875 |
| The Beer and Wine Company Ltd dba Gianluca Drinks | | | tax violations | 2019 | UK-HMRC | £179,465 |
| The Big Screen Co & Persuasive Image | | | tax violations | 2017 | UK-HMRC | £25,240 |
| The Bridge and Bayleaf Ltd | | | tax violations | 2021 | UK-HMRC | £45,672 |
| The Cedar Restaurant and Bar Limited | | | tax violations | 2020 | UK-HMRC | £95,300 |
| The Channel Islands Stock Exchange, LBG | | | investor protection violation | 2014 | UK-GFSC | £190,000 |
| The Codfather Fish Bar | | | tax violations | 2018 | UK-HMRC | £13,854 |
| The Copy Shop (Elgin) Limited | | | tax violations | 2019 | UK-HMRC | £12,695 |
| The Country Kitchen | | | tax violations | 2018 | UK-HMRC | £42,807 |
| The Crown (Tur Langton) Ltd | | | tax violations | 2022 | UK-HMRC | £24,137 |
| The District Arms | | | tax violations | 2019 | UK-HMRC | £42,955 |
| The EPH Core Trading Co Ltd | | | tax violations | 2018 | UK-HMRC | £192,512 |
| The Eye of the Tiger UK Ltd | | | tax violations | 2018 | UK-HMRC | £166,788 |
| The Food Group Ltd | | | tax violations | 2023 | UK-HMRC | £119,988 |
| The Fox and Hounds (Leicestershire) Ltd | | | tax violations | 2020 | UK-HMRC | £49,310 |
| The Frying Pan | | | tax violations | 2019 | UK-HMRC | £18,321 |
| The Gate Inn | | | tax violations | 2016 | UK-HMRC | £12,754 |
| The Golden Lion Restaurant Ltd | | | tax violations | 2018 | UK-HMRC | £53,789 |
| The Gray House Lettings & Property Management Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £1,250 |
