| Carter Backer Winter LLP | | | accounting fraud or deficiencies | 2016 | UK-ICAEW | £4,368 |
| Carr's BK Ltd | | | tax violations | 2019 | UK-HMRC | £105,395 |
| Carpenter Box Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £7,000 |
| Carpenter & Co | | | anti-money-laundering deficiencies | 2024 | UK-SRA | £14,122 |
| Carndale Enterprises Ltd | | | tax violations | 2017 | UK-HMRC | £940,429 |
| Carmarthen Construction Ltd | | | tax violations | 2017 | UK-HMRC | £21,044 |
| Carlton Gate Marketing Company Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £4,500 |
| Carlton Buildings | | | tax violations | 2023 | UK-HMRC | £4,225,950 |
| Carlos Gardening Services Limited | | | tax violations | 2023 | UK-HMRC | £57,674 |
| Carlane Construction Ltd | | | tax violations | 2019 | UK-HMRC | £69,389 |
| Carillion plc | | | investor protection violation | 2022 | UK-FCA | £0 |
| Caribbean Legal Services Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £11,347 |
| Care Asset Management Limited | | | investor protection violation | 2013 | UK-FSA | £56,000 |
| Carbon Technologies Group PLC | | | tax violations | 2018 | UK-HMRC | £19,174 |
| Cappawhite Plant Hire Ltd | | | tax violations | 2017 | UK-HMRC | £32,464 |
| Capital Solutions Limited | | | investor protection violation | 2017 | UK-GFSC | £0 |
| Capital Impex Ltd | | | tax violations | 2021 | UK-HMRC | £257,029 |
| Capital Care Investments Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £2,703 |
| Capital Bookkeeping Services Limited ASP | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £1,500 |
| Cape Verde Property Investmnets Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £4,500 |
| CAP10 Limited dba Indian Palace Takeaway | | | tax violations | 2018 | UK-HMRC | £27,716 |
| CAP Accountancy Limited | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £700 |
| Canuta Interiors Ltd | | | tax violations | 2023 | UK-HMRC | £108,856 |
| Canova Fine Arts Limited AMP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £10,000 |
| Canova Fine Arts Limited AMP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £10,000 |
| Cannon Street Business Centre Limited TCSP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £1,750 |
| Cannards Well Limited | | | tax violations | 2019 | UK-HMRC | £37,844 |
| Canim Fruit and Veg (Sheffield) Limited | | | tax violations | 2019 | UK-HMRC | £38,925 |
| Candy Restaurant | | | tax violations | 2016 | UK-HMRC | £24,288 |
| Canara Bank | | | anti-money-laundering deficiencies | 2018 | UK-FCA | £896,100 |
| Canale Residential Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £1,250 |
| Canal View Bus Café Limited | | | tax violations | 2023 | UK-HMRC | £39,799 |
| Campbell Property Consultants Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £2,585 |
| Campbell Cairns EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £2,750 |
| Cameron & Associates Ltd | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £1,292 |
| Camden Kebab Ltd dba Real Taste | | | tax violations | 2018 | UK-HMRC | £78,475 |
| Camac Engineering Ltd | | | tax violations | 2019 | UK-HMRC | £64,660 |
| Cam 3228 Ltd | | | tax violations | 2021 | UK-HMRC | £24,324 |
| Calicon and Associates | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £1,000 |
| Cakes and Bakes | | | tax violations | 2017 | UK-HMRC | £32,234 |
| Cafe Zoot Limited | | | tax violations | 2020 | UK-HMRC | £1,340,674 |
| Cafe TJ Limited | | | tax violations | 2019 | UK-HMRC | £15,863 |
| Cafe Jeera Ltd | | | tax violations | 2018 | UK-HMRC | £54,825 |
| Cafe Cod | | | tax violations | 2019 | UK-HMRC | £212,430 |
| Cafe 96 | | | tax violations | 2019 | UK-HMRC | £23,539 |
| Cadwallader & Co LLP | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £2,856 |
| C5 Clothing | | | tax violations | 2021 | UK-HMRC | £15,572 |
| C.J.M Tiling Ltd | | | tax violations | 2017 | UK-HMRC | £90,154 |
| C.J. Pizza Limited dba Lonestar Pizza | | | tax violations | 2020 | UK-HMRC | £49,169 |
| C.J. Lucking & Co | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £1,000 |
| C&L Cleaning and Drylining Ltd | | | tax violations | 2024 | UK-HMRC | £40,318 |
| C Mann Construction Limited | | | tax violations | 2022 | UK-HMRC | £850,781 |
| C M Simplified Solutions Ltd | | | tax violations | 2023 | UK-HMRC | £46,471 |
| C H London Limited | | | accounting fraud or deficiencies | 2017 | UK-ICAEW | £3,000 |
| C E Mechanical Services | | | tax violations | 2019 | UK-HMRC | £108,292 |
| C and V Leisure Limited | | | tax violations | 2017 | UK-HMRC | £33,985 |
| C And D Trading Group Inc dba Supreme Value | | | tax violations | 2019 | UK-HMRC | £62,468 |
| BWR Trading Limited | | | tax violations | 2023 | UK-HMRC | £163,729 |
| BWM Accountants Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £3,500 |
| BW Medical Accountants Limited | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £6,000 |
| BVN Partners LLP | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £6,455 |
| BVM Consultancy Services Limited | | | tax violations | 2023 | UK-HMRC | £14,969 |
| Buzzacott LLP | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £464 |
| Buying Agent Partnership (Kerry Arnold) Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £1,750 |
| Butterworth Barlow Limited | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £6,896 |
| Butler & Eves Ltd dba Samsons | | | tax violations | 2017 | UK-HMRC | £25,014 |
| Businex Ltd ASP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £2,668 |
| Business Services MK Ltd | | | tax violations | 2023 | UK-HMRC | £145,684 |
| Business Networks Management Ltd dba Zambezi Business Mangement Ltd | | | tax violations | 2018 | UK-HMRC | £4,351,395 |
| Business Focus & Systems Limited | | | accounting fraud or deficiencies | 2014 | UK-ICAEW | £10,442 |
| Business Equilibrium Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £2,700 |
| Business Autopilot Ltd ASP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £3,800 |
| Bushwood Associates Limited ASP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £3,450 |
| Bush & Co Limited | | | accounting fraud or deficiencies | 2024 | UK-ICAEW | £2,100 |
| Burrows | | | anti-money-laundering deficiencies | 2024 | UK-SRA | £12,989 |
| Burnley Road Off Licence | | | tax violations | 2023 | UK-HMRC | £37,460 |
| Burleighs Gin Limited. fka 45 West Distillers Limited. | | | tax violations | 2022 | UK-HMRC | £63,939 |
| Burgoyne Plumbing & Heating | | | tax violations | 2017 | UK-HMRC | £61,854 |
| Buon Appetito Hove Limited | | | tax violations | 2016 | UK-HMRC | £24,363 |
| Bullet Scaffolding Limited | | | tax violations | 2019 | UK-HMRC | £34,607 |
| Bukhoor Ltd | | | tax violations | 2023 | UK-HMRC | £33,004 |
| Building Solutions | | | tax violations | 2023 | UK-HMRC | £18,091 |
| Build n' Glass | | | tax violations | 2022 | UK-HMRC | £210,142 |
| Buco Digital Limited | | | tax violations | 2022 | UK-HMRC | £19,488 |
| Buckley Watson Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £4,110 |
| Buckle Barton Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £1,000 |
| BTC (London) Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £12,411 |
| BT Bricks | | | tax violations | 2023 | UK-HMRC | £25,913 |
| BSS NW Ltd | | | tax violations | 2019 | UK-HMRC | £28,368 |
| BSS & Co (Accountancy Services) Limited | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £700 |
| Brynmawr Tandoori Balti House | | | tax violations | 2018 | UK-HMRC | £32,508 |
| Brownrok Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £1,125 |
| Brown McLeod Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £25,605 |
| Brown McLeod Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £1,050 |
| Brown & Lee, Aylesbury Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,600 |
| Brooks Mayfield Limited | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £7,500 |
| Brooks Carling Accountants Limited | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £2,100 |
| Brooks Carling Accountants Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £3,320 |
| Brometals Limited | | | tax violations | 2019 | UK-HMRC | £43,359 |
| Broadhead Accountants Limited | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £9,768 |
| Broad Sparks and Construction | | | tax violations | 2023 | UK-HMRC | £65,730 |
