| BRC Wealth Ltd | Watford | 2025 |
| Brcp Holdings Ltd | London | 2021 |
| Brcs Consulting Limited | Exeter | 2019 |
| BRD Financial Ltd | Bedford | 2019 |
| BRD Holdings Ltd | Hornchurch | 2026 |
| BRE Colombia UK Holdings Limited | London | 2018 |
| BRE Holdings Ltd | Wellingborough | 2023 |
| BRE II Topco UK Limited | London | 2024 |
| BRE Ilford Limited | Borehamwood | 2021 |
| BRE UK Cosec 9 Ltd | London | 2021 |
| Breache House Limited | Woking | 2014 |
| Breaconridge | St. Albans | 2012 |
| Bread & Butter London Limited | Sevenoaks | 2016 |
| Bread Acquisitions Limited | London | 2011 |
| Bread Ahead Holdings Ltd | London | 2019 |
| Bread and Butter POD Ltd | Kensington | 2023 |
| Bread PAN Holdings Limited | London | 2016 |
| Breadbuns Ltd | Grimsby | 2016 |
| Breaden Capital Holdings Limited | London | 2023 |
| Breadsource Holding Limited | Park Farm Hotel, Norwich Road | 2019 |
| Break Free Ventures Limited | London | 2024 |
| Breakaway Partners Limited | London | 2024 |
| Breakaway Place Limited | Bridgwater | 2018 |
| Breakell Group Ltd | Blackburn | 2024 |
| Breakfort Limited | Dartford | 2014 |
| Breakpoint Research Holdings Limited | Basingstoke | 2025 |
| Breaks Wealth Management Limited | Bury | 2014 |
| Breaksea (Holdings) Limited | Porthcawl | 2013 |
| Breakspear Share Redistribution Ltd | Maldon | 2023 |
| Breakspear Ventures Ltd | Maldon | 2021 |
| Breakthrough Assets Holding Co Ltd | Nottingham | 2025 |
| Breakthrough Global Investments Ltd. | Newport | 2025 |
| Breakthrough Limited | Derby | 2024 |
| Breakthrough Mortgage & Financial Services Limited | Monmouth | 2014 |
| Breakthrough Therapy Ventures Ltd | Brighton | 2022 |
| Breakwater Consulting Limited | Harrow | 2016 |
| Breakwater FIC Unlimited | Droitwich | 2022 |
| Breakwater Financial Planning Limited | Plymouth | 2016 |
| BREAKWATERS33 Ltd | Rustington | 2024 |
| Breakwells Holdings Limited | Kidderminster | 2019 |
| Breal Capital (Ascot) Limited | London | 2016 |
| Breal Capital (BBN) Holdings Limited | London | 2023 |
| Breal Capital (Beagle) Limited | London | 2018 |
| Breal Capital (Black Sheep) Holdings Limited | London | 2023 |
| Breal Capital (Brick B) Holdings Limited | London | 2023 |
| Breal Capital (INV) Limited | London | 2023 |
| Breal Capital (Lyte) Limited | London | 2019 |
| Breal Capital (Nane) Limited | London | 2019 |
| Breal Capital (Pulman) Holdings Limited | London | 2019 |
| Breal Capital (Texas) Limited | London | 2024 |
| Breal Consulting Limited | London | 2012 |
| Brealeybox Holdings Ltd | Derby | 2020 |
| Bream Holdings UK Ltd | London | 2025 |
| Breas Technologies (UK) Limited | Stratford-Upon-Avon | 2014 |
| Breaston Consulting Ltd | Coalville | 2015 |
| Breath Capital Partners Ltd | Highbridge | 2026 |
| Breathbio Bidco Limited | Harrietsham | 2025 |
| Breathbio Midco Limited | Harrietsham | 2025 |
| Breathbio Topco Limited | Harrietsham | 2025 |
| Breathe Financial Solutions Ltd | London | 2011 |
| Breathe Insurance Brokers Ltd | Lincoln | 2011 |
| Breathe Mortgages Ltd | Pudsey | 2021 |
| Breathe Promotions Ltd | Cardiff | 2014 |
| Breathe Property Group Ltd | Calne | 2019 |
| Breathe Research Holdings Ltd | Keele | 2026 |
| Breathnach Financial Services Compliance Consulting Limited | Henley-On-Thames | 2018 |
| Brebur Group Ltd | Barnsley | 2024 |
| Brebur Holdings Ltd | Barnsley | 2024 |
| Brebur Services Ltd | Barnsley | 2012 |
| Brec 1 UK Limited | London | 2022 |
| Brecani Holdings Ltd | Maidstone | 2025 |
| Brechin Corporate Consultants Limited | Brentwood | 2015 |
| Brechin Investments Limited | Chagford | 2015 |
| Breckenridge Holdings Ltd | Romsey | 2026 |
| Breckland & Hall Limited | King'S Lynn | 2019 |
| Breckland Shipping Services Holdings Ltd | Diss | 2017 |
| Brecknell Family Company Ltd | Bristol | 2021 |
| Brecknell Holding Company Ltd | Bristol | 2021 |
| Brecks Holdings (Yorkshire) Ltd | Leeds | 2020 |
| Brecks Holdings Limited | Bubwith | 2015 |
| Breckstreet Investments Unlimited | York | 2022 |
| Brecon FX Ltd. | London | 2021 |
| Brecon Healthcare Holdings Limited | Wolverhampton | 2026 |
| Brecon Investments Ltd | London | 2020 |
| Brecon Specialty Limited | London | 2025 |
| Brecon Ventures Ltd. | London | 2021 |
| Bredale Holdings Limited | Dungannon | 2020 |
| Bredariol Financial Ltd | Leicester | 2023 |
| Bredero Shaw Limited | Aberdeen | 2022 |
| Bredon Finance Limited | Tewkesbury | 2022 |
| Bredon Financial Solutions Limited | Tewkesbury | 2026 |
| Bredon Hill Holdings Limited | Tewkesbury | 2021 |
| Bredon Hill Wealth Management Limited | Stourport On Severn | 2023 |
| Breds IV Silver Debt Portfolio Holding Co Limited | London | 2021 |
| Breds V Non-Us Investments GBP Ltd | London | 2021 |
| Bredwardine Investments Limited | Hatfield | 2022 |
| Bree Holdings Limited | Warrington | 2026 |
| Bree Homes Holdings Limited | Swanley | 2025 |
| Bree Wealth & Tax Management Ltd | Glasgow | 2014 |
| Breed Elliott (S.W.) Limited | Taunton | 2010 |