| The Naz Ormeau Road Ltd | | | tax violations | 2022 | UK-HMRC | £34,160 |
| The New Manchurian Ltd | | | tax violations | 2022 | UK-HMRC | £62,581 |
| The Oxford Arms | | | tax violations | 2023 | UK-HMRC | £14,730 |
| The Paper Shop | | | tax violations | 2016 | UK-HMRC | £23,642 |
| The Patek Life | | | tax violations | 2022 | UK-HMRC | £40,362 |
| The Pioniers Construction Group Ltd. | | | tax violations | 2023 | UK-HMRC | £116,550 |
| The Plaice to Go | | | tax violations | 2016 | UK-HMRC | £26,406 |
| The Property Sisters Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £7,000 |
| The Property Syndicate Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £1,350 |
| The Prudential Assurance Company Limited | M&G PLC | financial services | investor protection violation | 2019 | UK-FCA | £23,875,000 |
| The Prudential Assurance Company Limited | M&G PLC | financial services | investor protection violation | 2013 | UK-FSA | £16,000,000 |
| The Red House (Newport Pagnell) Ltd | | | tax violations | 2023 | UK-HMRC | £56,378 |
| The Robert Woolfson Partnership | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £4,500 |
| The Rowley Bar and Grill Ltd | | | tax violations | 2022 | UK-HMRC | £260,656 |
| The Royal Bank of Scotland plc and National Westminster Bank Plc | NatWest Group PLC | financial services | mortgage abuses | 2014 | UK-FCA | £14,474,600 |
| The Royal Bank of Scotland plc and The Royal Bank of Scotland N.V. | NatWest Group PLC | financial services | investor protection violation | 2013 | UK-FCA | £5,620,300 |
| The Royal Bank of Scotland plc et al. | NatWest Group PLC | financial services | anti-money-laundering deficiencies | 2010 | UK-FSA | £5,600,000 |
| The Royal Oak | | | tax violations | 2018 | UK-HMRC | £20,917 |
| The Scarborough Hotel | | | tax violations | 2023 | UK-HMRC | £26,312 |
| The Shalimar | | | tax violations | 2018 | UK-HMRC | £103,808 |
| The Tasty | | | tax violations | 2022 | UK-HMRC | £74,128 |
| The Tax Repayment Agency Ltd | | | tax violations | 2021 | UK-HMRC | £27,724 |
| The TJM Partnership Limited | | | anti-money-laundering deficiencies | 2022 | UK-FCA | £2,038,700 |
| The Trading Exchange Network Limited | | | tax violations | 2021 | UK-HMRC | £32,777 |
| The Upper Scale | | | tax violations | 2022 | UK-HMRC | £70,565 |
| The Upper Scale Limited | | | tax violations | 2022 | UK-HMRC | £458,705 |
| The Vehicle Finance Gurus Ltd ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £6,000 |
| The Waterfront Accountancy Group Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £8,340 |
| The Wellington | | | tax violations | 2023 | UK-HMRC | £31,414 |
| The Windsor Castle | | | tax violations | 2023 | UK-HMRC | £40,045 |
| Theale Tandoori Ltd | | | tax violations | 2019 | UK-HMRC | £77,799 |
| Thetford Food Centre Ltd | | | tax violations | 2020 | UK-HMRC | £16,986 |
| Thickbroom Coventry Limited | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £6,091 |
| This Is Our Business Limited | | | tax violations | 2018 | UK-HMRC | £39,524 |
| Thompson and Williams Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £2,500 |
| Thompson Taraz Rand Audit and Assurance Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £3,990 |
| Thompson Wright Limited | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £266 |
| Thompson’s Gallery Aldeburgh AMP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £5,500 |
| Thorne Widgery Accountancy Ltd | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £12,067 |
| ThorntonRones Ltd | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £750 |
| Thorntons Law LLP | | | investor protection violation | 2010 | UK-FSA | £35,000 |
| Thorpe & Co Property Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £10,875 |
| Threadneedle Asset Management Limited | | | investor protection violation | 2015 | UK-FCA | £6,038,504 |
| Three Cities Media Limited | | | tax violations | 2023 | UK-HMRC | £46,935 |
| Tidal Estates and Lettings Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £2,650 |
| Tiger Taxis (HW) Ltd | | | tax violations | 2020 | UK-HMRC | £165,649 |
| Tiger Vision Europe Ltd | | | tax violations | 2019 | UK-HMRC | £57,579 |
| Tilson and Spencer Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £6,394 |
| Timb-Tech Carpentry Ltd | | | tax violations | 2019 | UK-HMRC | £34,082 |
| Timer Construction Ltd | | | tax violations | 2017 | UK-HMRC | £323,542 |
| Timna Ltd | | | tax violations | 2021 | UK-HMRC | £15,866 |
| Timothy N. Horne Ltd | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £1,757 |
| Tin Cars Ltd | | | tax violations | 2016 | UK-HMRC | £194,688 |
| Tiryaq Services Ltd | | | tax violations | 2022 | UK-HMRC | £41,662 |
| TJF Drilining Ltd | | | tax violations | 2021 | UK-HMRC | £40,023 |
| TJM Partnership | | | anti-money-laundering deficiencies | 2022 | UK-FCA | £2,038,700 |
| TJS Property People Limited | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £0 |
| TM Foods (U.K.) Ltd fka Haji Babas dba Spice King | | | tax violations | 2022 | UK-HMRC | £53,983 |
| TM Payroll Limited | | | tax violations | 2016 | UK-HMRC | £515,471 |
| TMG Holdings Ltd | | | tax violations | 2021 | UK-HMRC | £25,058 |
| TMH Project Management Limited | | | tax violations | 2016 | UK-HMRC | £22,738 |
| TMT Autobodies Limited | | | tax violations | 2023 | UK-HMRC | £233,031 |
| Tod Inc Limited dba TriBeCa | | | tax violations | 2023 | UK-HMRC | £29,943 |
| Tolan Brothers | | | tax violations | 2019 | UK-HMRC | £16,145 |
| Tom Goy Property Consultants Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £6,500 |
| Tomkinson Teal (Lichfield) LLP | | | accounting fraud or deficiencies | 2022 | UK-ICAEW | £30,617 |
| Tomtop Supplies Limited | | | tax violations | 2019 | UK-HMRC | £104,955 |
| Tony's Parmesan House | | | tax violations | 2020 | UK-HMRC | £25,253 |
| Tooting Estate Agents Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £14,500 |
| Top China | | | tax violations | 2023 | UK-HMRC | £43,874 |
| Top Dogs | | | tax violations | 2018 | UK-HMRC | £18,073 |
| Top Fryers Fish Bar | | | tax violations | 2018 | UK-HMRC | £45,767 |
| Top Fryers Fish Bar | | | tax violations | 2018 | UK-HMRC | £18,904 |
| Top Fryers Fish Bar | | | tax violations | 2018 | UK-HMRC | £18,812 |
| Top Supermarket Ltd | | | tax violations | 2023 | UK-HMRC | £85,068 |
| Top Wok | | | tax violations | 2022 | UK-HMRC | £52,326 |
| Topps Rogers Financial Management | | | investor protection violation | 2012 | UK-FSA | £97,600 |
| Tops Pizza (Leatherhead) Limited | | | tax violations | 2023 | UK-HMRC | £30,819 |
| Torchwood Trading Ltd | | | tax violations | 2022 | UK-HMRC | £286,895 |
| Totally Thai | | | tax violations | 2023 | UK-HMRC | £80,646 |
| Totterdale Builders Limited | | | tax violations | 2016 | UK-HMRC | £30,537 |
| Touch Down Trails | | | tax violations | 2018 | UK-HMRC | £37,150 |
| Touma Foreign Exchange Ltd | | | anti-money-laundering deficiencies | 2019 | UK-HMRC | £678,849 |
| Town & City Homes Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £10,400 |
| Towry Investment Management Limited | | | investor protection violation | 2011 | UK-FSA | £494,900 |
| Toya Construct Ltd | | | tax violations | 2018 | UK-HMRC | £41,008 |
| Tracerco Limited | Johnson Matthey | metals | economic sanctions violation | 2022 | UK-OFSI | £0 |
| Trade vans trade prices South Wales | | | tax violations | 2018 | UK-HMRC | £41,831 |
| Trademotors Limited | | | tax violations | 2021 | UK-HMRC | £315,219 |
| Tradewell UK Limited dba Hill Top | | | tax violations | 2019 | UK-HMRC | £36,670 |
| Trafficflow Management Ltd | | | tax violations | 2018 | UK-HMRC | £107,705 |
| TransferGo Limited | | | economic sanction violation | 2021 | UK-OFSI | £50,000 |
| Transwaste Recycling and Aggregates Limited | | | tax violations | 2018 | UK-HMRC | £133,999 |
| Travelex UK Ltd | | | economic sanction violation | 2019 | UK-OFSI | £10,000 |
| Trawlpac International Limited | | | tax violations | 2021 | UK-HMRC | £14,430 |
| Tre Colori Ltd dba Case Italia | | | tax violations | 2020 | UK-HMRC | £57,674 |
| Treads N Signs Ltd | | | tax violations | 2019 | UK-HMRC | £36,532 |
| Tremorfa Takeaway | | | tax violations | 2022 | UK-HMRC | £26,912 |
| Tremorfa Takeaway Limited | | | tax violations | 2022 | UK-HMRC | £39,794 |
| Trentbay Ltd dba Prestige Plumbing and Heating Supplies | | | tax violations | 2016 | UK-HMRC | £65,266 |
| Trevor Goodship & Associates Limited ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £26,077 |
