| Blackrock Investment Management (UK) Limited | BlackRock | financial services | investor protection violation | 2012 | UK-FSA | £9,533,100 |
| Blackstone Properties Group Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £7,200 |
| Blaydon Bookkeeping Ltd ASP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £4,228 |
| Blaze Tanning | | | tax violations | 2019 | UK-HMRC | £61,158 |
| Blenheim Fiduciary Group Limited | | | anti-money-laundering deficiencies | 2017 | UK-GFSC | £70,000 |
| Blick Rothenberg Global Business Services Limited | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £7,924 |
| Blu Sky Tax Ltd | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £7,000 |
| Blue Arrow Accounting Ltd | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £779 |
| Blue Bell Inn Nottm Ltd | | | tax violations | 2018 | UK-HMRC | £502,673 |
| Blue Chilli Transport Limited | | | tax violations | 2017 | UK-HMRC | £417,429 |
| Blue Ice Consortium Ltd dba Maya Fine Indian Dining | | | tax violations | 2020 | UK-HMRC | £46,974 |
| Blueprint Partnership (Manchester) Ltd | | | tax violations | 2022 | UK-HMRC | £243,757 |
| Bluevale Structures Ltd | | | tax violations | 2019 | UK-HMRC | £57,709 |
| BMB Corrosion Prevention Consultancy Ltd | | | tax violations | 2023 | UK-HMRC | £43,400 |
| BNY Mellon Corporate Trustee Services Ltd TCSP | Bank of New York Mellon | financial services | anti-money-laundering deficiencies | 2021 | UK-HMRC | £9,465 |
| Boava Solutions Ltd | | | tax violations | 2022 | UK-HMRC | £72,845 |
| Boblec Hall Limited | | | tax violations | 2018 | UK-HMRC | £46,288 |
| Boldmore Real Estate Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £1,350 |
| Bolton Reed Limited ASP | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £14,000 |
| Bombay Blues (Westclife) Ltd | | | tax violations | 2022 | UK-HMRC | £85,027 |
| Bond Wolfe Auctions Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £52,000 |
| Bono Properties Number Two Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,950 |
| Boot & Son Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £5,800 |
| Bora Bora Limited | | | tax violations | 2023 | UK-HMRC | £15,406 |
| Bordeaux Services (Guernsey) Limited | | | investor protection violation | 2016 | UK-GFSC | £100,000 |
| Borders & West (Inc. Howe & Co) Limited ASP | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,888 |
| Born Associates Limited | | | anti-money-laundering deficiencies | 2021 | UK-ICAEW | £5,000 |
| Borneo House Ltd dba The Laughing Buddha | | | tax violations | 2016 | UK-HMRC | £136,149 |
| BOSeCo | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £0 |
| Bournemouth Lahore Ltd | | | tax violations | 2022 | UK-HMRC | £16,360 |
| Boy Plant Ltd | | | tax violations | 2022 | UK-HMRC | £602,191 |
| Boyce Care Ltd | | | tax violations | 2018 | UK-HMRC | £235,770 |
| BP Remit Limited  | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £0 |
| BPC Chandarana & Co Ltd | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £1,750 |
| BR Estate Agents Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,000 |
| Bracken Rothwell Limited | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £4,350 |
| Bradshaw Estate Agents Limited | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £0 |
| Bradwell & Partners | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £750 |
| Brafman Enterprises Limited dba Le Cafe | | | tax violations | 2017 | UK-HMRC | £32,113 |
| Braham Good LLP EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £6,555 |
| Bramley Off Licence Ltd | | | tax violations | 2018 | UK-HMRC | £25,850 |
| Bramwell Morris | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £1,464 |
| Brandfresh Ltd | | | tax violations | 2017 | UK-HMRC | £123,371 |
| Brentwood Alaturka Ltd dba A La Turka | | | tax violations | 2020 | UK-HMRC | £37,821 |
| Brewchoice Ltd | | | tax violations | 2018 | UK-HMRC | £956,388 |
| Brian Hughes and Sons | | | tax violations | 2019 | UK-HMRC | £384,010 |
| Brian McManus Car Sales Ltd | | | tax violations | 2022 | UK-HMRC | £10,250 |
| Brian Paul Limited | | | accounting fraud or deficiencies | 2017 | UK-ICAEW | £12,792 |
| Brian Ziff Limited | | | accounting fraud or deficiencies | 2022 | UK-ICAEW | £350 |
| Bridge Investment & Developments Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £8,400 |
| Bridgegate Patrol Dogs Ltd | | | tax violations | 2018 | UK-HMRC | £58,199 |
| Bridgeview Logistics Ltd | | | tax violations | 2022 | UK-HMRC | £33,643 |
| Bridgewater (IOM) Limited | | | anti-money-laundering deficiencies | 2021 | UK-IOM | £225,085 |
| Bridging Loans Ltd | | | mortgage abuses | 2010 | UK-FSA | £42,000 |
| Bridgnorth Business Services Ltd | | | tax violations | 2022 | UK-HMRC | £59,751 |
| Bright Entertainment Ltd dba Spices Knutsford | | | tax violations | 2018 | UK-HMRC | £41,657 |
| Brighton & Beck Property Group Ltd EAB | | | anti-money-laundering deficiencies | 2023 | UK-HMRC | £6,400 |
| Brisha Limited dba Bayleaf Restaurant | | | tax violations | 2018 | UK-HMRC | £199,673 |
| Bristol Street Book-keeping Limited ASP | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £5,000 |
| Bristow Still | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £6,350 |
| Britaniashaw Ltd | | | anti-money-laundering deficiencies | 2019 | UK-HMRC | £500 |
| Broad Sparks and Construction | | | tax violations | 2023 | UK-HMRC | £65,730 |
| Broadhead Accountants Limited | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £9,768 |
| Brometals Limited | | | tax violations | 2019 | UK-HMRC | £43,359 |
| 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 |
| Brooks Mayfield Limited | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £7,500 |
| Brown & Lee, Aylesbury Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £3,600 |
| Brown McLeod Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £25,605 |
| Brown McLeod Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £1,050 |
| Brownrok Limited EAB | | | anti-money-laundering deficiencies | 2021 | UK-HMRC | £1,125 |
| Brynmawr Tandoori Balti House | | | tax violations | 2018 | UK-HMRC | £32,508 |
| BSS & Co (Accountancy Services) Limited | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £700 |
| BSS NW Ltd | | | tax violations | 2019 | UK-HMRC | £28,368 |
| BT Bricks | | | tax violations | 2023 | UK-HMRC | £25,913 |
| BTC (London) Limited EAB | | | anti-money-laundering deficiencies | 2022 | UK-HMRC | £12,411 |
| Buckle Barton Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £1,000 |
| Buckley Watson Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £4,110 |
| Buco Digital Limited | | | tax violations | 2022 | UK-HMRC | £19,488 |
| Build n' Glass | | | tax violations | 2022 | UK-HMRC | £210,142 |
| Building Solutions | | | tax violations | 2023 | UK-HMRC | £18,091 |
| Bukhoor Ltd | | | tax violations | 2023 | UK-HMRC | £33,004 |
| Bullet Scaffolding Limited | | | tax violations | 2019 | UK-HMRC | £34,607 |
| Buon Appetito Hove Limited | | | tax violations | 2016 | UK-HMRC | £24,363 |
| Burgoyne Plumbing & Heating | | | tax violations | 2017 | UK-HMRC | £61,854 |
| Burleighs Gin Limited. fka 45 West Distillers Limited. | | | tax violations | 2022 | UK-HMRC | £63,939 |
| Burnley Road Off Licence | | | tax violations | 2023 | UK-HMRC | £37,460 |
| Business Equilibrium Limited | | | accounting fraud or deficiencies | 2019 | UK-ICAEW | £2,700 |
| Business Focus & Systems Limited | | | accounting fraud or deficiencies | 2014 | UK-ICAEW | £10,442 |
| Business Networks Management Ltd dba Zambezi Business Mangement Ltd | | | tax violations | 2018 | UK-HMRC | £4,351,395 |
| Business Services MK Ltd | | | tax violations | 2023 | UK-HMRC | £145,684 |
| Butler & Eves Ltd dba Samsons | | | tax violations | 2017 | UK-HMRC | £25,014 |
| Butterworth Barlow Limited | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £6,896 |
| Buzzacott LLP | | | accounting fraud or deficiencies | 2018 | UK-ICAEW | £464 |
| BVM Consultancy Services Limited | | | tax violations | 2023 | UK-HMRC | £14,969 |
| BVN Partners LLP | | | accounting fraud or deficiencies | 2020 | UK-ICAEW | £6,455 |
| BW Medical Accountants Limited | | | accounting fraud or deficiencies | 2021 | UK-ICAEW | £6,000 |
| BWM Accountants Limited | | | accounting fraud or deficiencies | 2023 | UK-ICAEW | £3,500 |
| BWR Trading Limited | | | tax violations | 2023 | UK-HMRC | £163,729 |
| C And D Trading Group Inc dba Supreme Value | | | tax violations | 2019 | UK-HMRC | £62,468 |
| C and V Leisure Limited | | | tax violations | 2017 | UK-HMRC | £33,985 |
