| Templemoyle Plastering Ltd | | | tax violations | 2021 | UK-HMRC | £26,849 |
| Temple Wharf Property Consultants Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,000 |
| Temple Industries Ltd dba The Temple | | | tax violations | 2018 | UK-HMRC | £23,142 |
| Telia Carrier UK Limited | | | economic sanction violation | 2019 | UK-OFSI | £146,341 |
| Telford Accountancy Services Limited ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £2,362 |
| Tekin Trading Ltd dba Kirve Food Centre | | | tax violations | 2019 | UK-HMRC | £59,760 |
| Tejoori Limited | | | investor protection violation | 2017 | UK-FCA | £70,000 |
| Techsimulater Ltd | | | tax violations | 2023 | UK-HMRC | £88,163 |
| Technofix Ltd | | | tax violations | 2021 | UK-HMRC | £27,589 |
| Technica Group | | | tax violations | 2017 | UK-HMRC | £21,486 |
| Tech Traders Ltd | | | tax violations | 2023 | UK-HMRC | £65,448 |
| Teams The Pizza Master Ltd | | | tax violations | 2021 | UK-HMRC | £43,970 |
| Team Audit Ltd | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £1,400 |
| Tclass Facilities Management Limited | | | tax violations | 2023 | UK-HMRC | £38,275 |
| TC Railways Limited | | | tax violations | 2018 | UK-HMRC | £18,450 |
| TBTR Ltd dba The Boat That Rocks | | | tax violations | 2016 | UK-HMRC | £86,248 |
| Taylors Avenue Developments Limited | | | tax violations | 2016 | UK-HMRC | £29,882 |
| Taylor Made Residential Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £6,692 |
| Taylor Made Renewable Energy Technologies Limited | | | tax violations | 2020 | UK-HMRC | £32,561 |
| Taxation and Accountancy Solutions Limited | | | tax violations | 2021 | UK-HMRC | £197,298 |
| Tax Expert Limited ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,500 |
| Tasty Village Ltd | | | tax violations | 2023 | UK-HMRC | £28,458 |
| Tasty Foods | | | tax violations | 2023 | UK-HMRC | £29,640 |
| Taste Of Gurkhas Limited | | | tax violations | 2020 | UK-HMRC | £19,202 |
| Tas Building Solutions Ltd | | | tax violations | 2023 | UK-HMRC | £38,267 |
| Taram Ltd dba Caledonian Kebab | | | tax violations | 2019 | UK-HMRC | £178,523 |
| Tara's All Nighter | | | tax violations | 2016 | UK-HMRC | £41,058 |
| Tap and Spile | | | tax violations | 2020 | UK-HMRC | £107,058 |
| Tap & Spile Ltd | | | tax violations | 2020 | UK-HMRC | £53,093 |
| Taobao London Ltd | | | tax violations | 2019 | UK-HMRC | £14,934 |
| Tantou Limited | | | tax violations | 2023 | UK-HMRC | £26,240 |
| Tandoori Kitchen | | | tax violations | 2017 | UK-HMRC | £20,805 |
| Tandoor Mahal (Maidstone) Ltd | | | tax violations | 2019 | UK-HMRC | £72,757 |
| Tan Trading Limited | | | tax violations | 2016 | UK-HMRC | £450,799 |
| Tal1 Ltd | | | tax violations | 2023 | UK-HMRC | £28,220 |
| Tailormade Construction (NW) Ltd | | | tax violations | 2020 | UK-HMRC | £63,284 |
| Tacorite Trading | | | tax violations | 2018 | UK-HMRC | £61,759 |
| T.F. Solutions Limited | | | tax violations | 2015 | UK-HMRC | £27,470 |
| T W Telecommunications Ltd | | | tax violations | 2017 | UK-HMRC | £1,744,452 |
| T Broadhurst Decorators | | | tax violations | 2016 | UK-HMRC | £15,046 |
| T and T Partitioning Limited | | | tax violations | 2016 | UK-HMRC | £40,968 |
| T & S Fashions Ltd | | | tax violations | 2018 | UK-HMRC | £459,270 |
| T & S 2556 Ltd dba Thai Sarocha | | | tax violations | 2020 | UK-HMRC | £165,764 |
| Synergy Land Group Limited | | | investor protection violation | 2023 | UK-FCA | £27,000 |
| Symor Construction Limited | | | tax violations | 2018 | UK-HMRC | £37,308 |
| Sylhet Takeaway Limited (Formerly trading as ‘Green Chillies’) | | | tax violations | 2023 | UK-HMRC | £56,510 |
| Sworders Agricultural Commercial and Residential Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £6,100 |
| Switch2day Limited dba Uswitch Business Telecommunications Limited | | | tax violations | 2017 | UK-HMRC | £18,672 |
| Swiss Cottage | | | tax violations | 2023 | UK-HMRC | £29,093 |
| Swiftbooks09 | | | tax violations | 2017 | UK-HMRC | £42,205 |
| Swift Real Estate Agents Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,300 |
| Swift Insulation & Construction Ltd | | | tax violations | 2022 | UK-HMRC | £303,911 |
| Swift 1st Limited | | | mortgage abuses | 2011 | UK-FSA | £630,000 |
| Swastik Traders Ltd | | | tax violations | 2017 | UK-HMRC | £127,002 |
| 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 |
| Sushi Land Ltd. | | | tax violations | 2021 | UK-HMRC | £104,251 |
| Surrey Pubs And Inns Ltd | | | tax violations | 2017 | UK-HMRC | £167,838 |
| Surrey Homes Ltd (a company registered in the Isle Of Man) | | | tax violations | 2017 | UK-HMRC | £48,960 |
| Surrealty Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £4,460 |
| Surelet Hemel Hempstead Ltd | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £0 |
| Sure Trading Limited | | | tax violations | 2019 | UK-HMRC | £227,234 |
| Superpower Payroll Limited | | | tax violations | 2016 | UK-HMRC | £1,457,539 |
| Superior Scaffolding Limited | | | tax violations | 2023 | UK-HMRC | £40,796 |
| Suomen Puhallinteknikka OY | | | tax violations | 2021 | UK-HMRC | £33,285 |
| Sunshine Valet Ltd | | | tax violations | 2020 | UK-HMRC | £38,726 |
| Sunseeker London Ltd | | | tax violations | 2018 | UK-HMRC | £19,851 |
| Sunrise Brokers LLP | BGC Partners | financial services | anti-money-laundering deficiencies | 2021 | UK-FCA | £642,400 |
| Sunripe Exotic Ltd | | | tax violations | 2017 | UK-HMRC | £27,169 |
| Sunny Take Away | | | tax violations | 2022 | UK-HMRC | £186,244 |
| Sunny Bay Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £2,750 |
| Sunnerd Ltd | | | tax violations | 2018 | UK-HMRC | £118,115 |
| Sund Delivery Limited dba TGF Pizza | | | tax violations | 2016 | UK-HMRC | £118,369 |
| Sunargow Restaurant Ltd | | | tax violations | 2019 | UK-HMRC | £208,774 |
| Sun Life Assurance Company of Canada (UK) Limited | Sun Life Financial | financial services | investor protection violation | 2012 | UK-FSA | £600,000 |
| Sumo Products | | | tax violations | 2016 | UK-HMRC | £133,309 |
| Summit Financial Consulting Limited ASP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £2,750 |
| Sumhas Cars Ltd | | | tax violations | 2022 | UK-HMRC | £28,059 |
| Sumer 62 Ltd | | | anti-money-laundering deficiencies | 2020 | UK-HMRC | £0 |
| Sugjarern Limited dba Tong Thai Restaurant | | | tax violations | 2020 | UK-HMRC | £16,334 |
| Sue Bridges Lettings Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £5,500 |
| Styles & Co JFC Limited | | | anti-money-laundering deficiencies | 2020 | UK-ICAEW | £700 |
| Styleblue Ltd dba The Baked Potato Shop | | | tax violations | 2018 | UK-HMRC | £56,898 |
| Stratstone Estates Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,100 |
| Stratos Property Development and Investment Consultants EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £2,750 |
| Strada Real Estates Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £5,700 |
| STR Trucksales Ltd | | | tax violations | 2017 | UK-HMRC | £43,688 |
| Stormcheck Roofing Systems Limited | | | tax violations | 2019 | UK-HMRC | £23,535 |
| Stopfords (Chesterfield) LLP | | | accounting fraud or deficiencies | 2016 | UK-ICAEW | £3,805 |
| Stibbards’ Property Limited EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £2,750 |
| Stewarts Accountants Limited | | | accounting fraud or deficiencies | 2022 | UK-ICAEW | £1,400 |
| Stewart & Partners | | | accounting fraud or deficiencies | 2016 | UK-ICAEW | £6,000 |
| Sterte Print Limited | | | tax violations | 2019 | UK-HMRC | £18,721 |
| Sterling Property Consultants Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £5,950 |
| Sterling Management Contract Services Ltd | | | tax violations | 2022 | UK-HMRC | £66,580 |
| Sterling First Limited ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £1,150 |
| Stericile Ltd | | | tax violations | 2021 | UK-HMRC | £66,941 |
| Stellar Central Services Limited | | | tax violations | 2023 | UK-HMRC | £154,509 |
| Stella Mares Ltd dba Barraco | | | tax violations | 2018 | UK-HMRC | £78,004 |
| Stefplast Ltd | | | tax violations | 2018 | UK-HMRC | £57,368 |
| Stationers Depot | | | tax violations | 2017 | UK-HMRC | £21,785 |
