| QH Luck Ltd | Hospitality | 2024 |
| QHL Ltd | Hospitality | 2025 |
| QHN Ltd | Hospitality | 2025 |
| QI Partners | Administrative & support | 2015 |
| QIB Extra Limited | Professional & scientific | 2008 |
| Qinexus Property Services Ltd | Real estate | 2023 |
| Qmxd Limited | Health & social care | 2020 |
| Qonsort Limited | Information & communication | 1999 |
| QR Norwich Limited | Real estate | 2014 |
| Quad Bits Limited | Extraterritorial | 2017 |
| Quad Capital Limited | Construction | 2019 |
| Quad Squad (SW) Ltd | Financial services | 2022 |
| Quadram Institute Bioscience | Professional & scientific | 1995 |
| Quadric Developments Limited | Real estate | 2001 |
| Quaestus (Ankb) Limited | Professional & scientific | 2015 |
| Quaestus (RD) Limited | Professional & scientific | 2015 |
| Quafftide Limited | Financial services | 2024 |
| Quailitas Limited | Wholesale & retail | 2014 |
| Quality Brickwork Norfolk Ltd | Construction | 2021 |
| Quality Cars 4 YOU Ltd | Wholesale & retail | 2018 |
| Quality Coach Travel Ltd | Administrative & support | 2024 |
| Quality Construction Design & Build Limited | Construction | 2019 |
| Quality Desserts Ltd | Hospitality | 2022 |
| Quality Foods Direct Limited | Hospitality | 2017 |
| Quality Plants Limited | Agriculture & fishing | 1997 |
| Quality Teacher Recruitment Ltd | Administrative & support | 2015 |
| Qualityapp Limited | Information & communication | 2023 |
| Qualtech Power Ltd | Construction | 2018 |
| Quanntum Limited | Manufacturing | 2014 |
| Quanstrom Design Studio Ltd | Manufacturing | 2017 |
| Quantifix Ltd | Professional & scientific | 2024 |
| Quantrell Holdings Limited | Financial services | 2024 |
| Quantx Engineering Ltd | Information & communication | 2023 |
| Quarles Limited | Professional & scientific | 1905 |
| Quartz Communications Ltd | Wholesale & retail | 2009 |
| Quattro Claims Ltd. | Other services | 2018 |
| Queen Street Property Norwich Limited | Real estate | 2004 |
| Queensdale Partnership Limited | Other services | 1999 |
| Queenstone Limited | Real estate | 2021 |
| Queer Professionals Ltd | Other services | 2024 |
| Queerfest CIC | Information & communication | 2025 |
| Quentor Limited | Manufacturing | 1987 |
| Quest ARC Developments Limited | Construction | 2022 |
| Questor Group Trustee Limited | Financial services | 2024 |
| Questspan Limited | Real estate | 1988 |
| Quiche 'N' Beans Ltd | Hospitality | 2025 |
| Quick Brown FOX Communications Ltd | Information & communication | 2024 |
| Quick Fill Limited | Manufacturing | 1996 |
| Quickfire Digital Limited | Information & communication | 2015 |
| Quickfire Limited | Information & communication | 2025 |
| Quickfix Electricals Limited | Construction | 2021 |
| Quickfix Interim Business Solution Limited | Administrative & support | 2025 |
| Quickturn Pro Decorating Services Ltd | Construction | 2020 |
| Quietwater Estates Ltd | Real estate | 2021 |
| Quiits Consulting Limited | Information & communication | 2011 |
| Quill & Inkling Ltd | Arts & recreation | 2014 |
| Quinney and Company Ltd | Professional & scientific | 2003 |
| Quinneys Accountants Ltd | Professional & scientific | 2019 |
| Quinnshell Ltd | Other services | 2020 |
| Quinnzies Ltd | Wholesale & retail | 2019 |
| Quintessential Code Ltd | Information & communication | 2025 |
| Quiz Holdings Ltd | Extraterritorial | 2022 |
| Quoteinsights Limited | Information & communication | 2023 |
| Qureshi Holdings Limited | Hospitality | 2018 |
| Qurious Herb Limited | Administrative & support | 2024 |
| QUY Construction Limited | Construction | 2016 |
| R & a Holdings (Norwich) Ltd | Financial services | 2025 |
| R & a Latham Builders & Bespoke Carpentry Ltd | Construction | 2018 |
| R & a Norwich Limited | Construction | 2011 |
| R & D Waller (Sawmills) Ltd. | Extraterritorial | 2012 |
| R & M Paving Services Limited | Construction | 2005 |
| R & R Europe Limited | Real estate | 2018 |
| R & R Trailers Ltd | Wholesale & retail | 2012 |
| R & R’S Motorhome Rental Ltd | Administrative & support | 2023 |
| R & S Leverett Holdings Limited | Financial services | 2023 |
| R 2 R Limited | Wholesale & retail | 2015 |
| R a Brown Heating Services Ltd | Construction | 2010 |
| R and C Windows and Conservatories Ltd | Construction | 2021 |
| R and J Pipework Limited | Construction | 2009 |
| R B Copping Funeral Services Limited | Other services | 2011 |
| R B Elvin & SON Ltd | Construction | 2003 |
| R Bell Engineering Services Limited | Mining & quarrying | 2013 |
| R C a Bank Limited | Administrative & support | 2007 |
| R C Collins Limited | Real estate | 2022 |
| R Croft Electrical Ltd | Construction | 2024 |
| R D & M Gregg Limited | Wholesale & retail | 2003 |
| R D Hutton & Partners | | 1996 |
| R D Research Limited | Information & communication | 2007 |
| R D S Building Ltd | Construction | 2019 |
| R Dunn Ltd | Construction | 2021 |
| R E Stone & Sons Ltd | Agriculture & fishing | 2002 |
| R G & M Wadlow & SON Limited | Manufacturing | 2003 |
| R G Carter Colchester Limited | Professional & scientific | 1987 |
| R G Carter Holdings Holdco Limited | Financial services | 2024 |
| R G Carter Holdings Limited | Financial services | 2024 |
| R G Carter Ipswich Limited | Professional & scientific | 2005 |
| R G Carter Lincoln Limited | Construction | 1982 |
| R G Carter Southern Limited | Construction | 2003 |
| R G Cole Kitchens Limited | Wholesale & retail | 2005 |
| R G Medler Farming Limited | Agriculture & fishing | 1999 |