| Quick Drylining Limited | Construction | 2019 |
| Quick Flip Sales Ltd | Wholesale & retail | 2025 |
| Quick Mortgage Solutions Ltd | Financial services | 2022 |
| Quick Security Group Limited | Administrative & support | 2023 |
| Quickdeck Ltd | Construction | 2019 |
| Quickstep Care Ltd | Health & social care | 2025 |
| Quickstep Healthcare Ltd | Health & social care | 2024 |
| Quincey Lofts Ltd | Construction | 2018 |
| Quintessential Travel Ltd | Administrative & support | 2020 |
| Quinton Major Precision Limited | Manufacturing | 1982 |
| Quirkas Limited | Health & social care | 2018 |
| Quisk Communications Limited | Professional & scientific | 2000 |
| Quorix Consulting Ltd | Professional & scientific | 2024 |
| Quovidion Ltd | Information & communication | 2008 |
| QY Transport Ltd | Transport & logistics | 2018 |
| Qypi Investment Ltd | Real estate | 2024 |
| QZ by MHT Limited | Wholesale & retail | 2026 |
| R & a Holdings (London) Limited | Financial services | 2016 |
| R & AB Property Management Ltd. | Administrative & support | 2016 |
| R & D Financial Management LLP | | 2015 |
| R & G Mouldings Limited | Manufacturing | 2021 |
| R & JW Care Ltd | Health & social care | 2011 |
| R & M Investors Ltd | Real estate | 2020 |
| R & S Laser Cutting & Fabrications Limited | Manufacturing | 1996 |
| R a S Transport Services Limited | Transport & logistics | 2011 |
| R Agent Ltd | Administrative & support | 2024 |
| R and M Paving (Northampton) Ltd | Construction | 2014 |
| R B a Limited | Professional & scientific | 2001 |
| R B Build Ltd | Wholesale & retail | 2023 |
| R B Window Cleaning Ltd | Administrative & support | 2026 |
| R Bandey Brickwork Ltd | Construction | 2020 |
| R Barber Ltd | Other services | 2025 |
| R C Catering Limited | Real estate | 2017 |
| R C Oral Health Ltd | Health & social care | 2018 |
| R Cars Northampton Ltd | Transport & logistics | 2020 |
| R Dearing Limited | Financial services | 2012 |
| R Electrical Installations Ltd | Construction | 2026 |
| R G LEA Driver Services Ltd | Transport & logistics | 2022 |
| R Gibson Consultancy Limited | Professional & scientific | 2020 |
| R Hollis Properties Ltd | Real estate | 2018 |
| R J Farmer Electrical Limited | Construction | 2019 |
| R J Hawkins Ltd | Other services | 2008 |
| R J Lewis Electrical Limited | Construction | 2013 |
| R J Muskin Builders Limited | Construction | 2007 |
| R J Q Associates Limited | Professional & scientific | 2021 |
| R Joseph Plastering Limited | Extraterritorial | 2019 |
| R L E Construction Ltd | Construction | 2011 |
| R Lange Construction Ltd | Construction | 2017 |
| R Luck Electrical Services Ltd | Construction | 2025 |
| R M Landscapes Ltd | Agriculture & fishing | 2002 |
| R Music Limited | Professional & scientific | 2021 |
| R Oak Bryant Inns Ltd | Hospitality | 2025 |
| R Payne Roofing Services Limited | Other services | 2011 |
| R Q Consulting Services Ltd | Professional & scientific | 2025 |
| R R Property Development Ltd | Real estate | 2019 |
| R S Carpentry (Northampton) Limited | Construction | 2016 |
| R S Financial Solutions Limited | Professional & scientific | 1996 |
| R Salter (Northants) Limited | Manufacturing | 2017 |
| R Tudos Renovation Ltd | Administrative & support | 2016 |
| R Vann Ltd | Professional & scientific | 2019 |
| R Wilson Scaffolding Limited | Construction | 2006 |
| R&A Assistance Ltd | Health & social care | 2017 |
| R&A Civil Engineering Ltd | Construction | 2023 |
| R&C Construct Ltd | Construction | 2023 |
| R&C Motion Volt Ltd | Wholesale & retail | 2025 |
| R&C Volt Motion Ltd | Wholesale & retail | 2025 |
| R&G Distribution Limited | Transport & logistics | 2024 |
| R&H Realty Ltd | Real estate | 2025 |
| R&H the Dog Associates Limited | Wholesale & retail | 2025 |
| R&J Enterprise Group Ltd | Wholesale & retail | 2026 |
| R&J Investments Ltd | Real estate | 2021 |
| R&J Knight Limited | Agriculture & fishing | 2010 |
| R&M Logistic Ltd | Transport & logistics | 2018 |
| R&M Riser Engineering Limited | Construction | 2019 |
| R&R Cars Northampton Ltd | Wholesale & retail | 2025 |
| R&R Events Catering Ltd | Hospitality | 2024 |
| R&R Recruitment Services Ltd | Administrative & support | 2024 |
| R&S Compressors and Industrial Cleaning Equipment Limited | Extraterritorial | 2017 |
| R&S Industrial Cleaning Equipment & Compressors Limited | Professional & scientific | 2016 |
| R&S Real Estate Limited | Real estate | 2019 |
| R&S Transport and Logistics Ltd | Transport & logistics | 2023 |
| R&Sp Ltd | Hospitality | 2018 |
| R&V Letting Limited | Real estate | 2022 |
| R&V Maintenance Ltd | Construction | 2022 |
| R&W Partners Ltd | Professional & scientific | 2026 |
| R,S & E Ltd | Wholesale & retail | 2021 |
| R-Az-Am LLP | | 2017 |
| R. G. Manufacturing Limited | Manufacturing | 1971 |
| R. S. Scaffolding Limited | Construction | 2023 |
| R.A. and K.M. Garrett Limited | Agriculture & fishing | 1984 |
| R.A.H Groundworks Ltd | Water & waste | 2025 |
| R.A.Johnson(Northampton) Ltd | Transport & logistics | 2024 |
| R.Anthony Physio Ltd | Other services | 2024 |
| R.B.Tonka Auto -Service Limited Limited | Wholesale & retail | 2025 |
| R.Begum Limited | Professional & scientific | 2023 |
| R.D. OUT of School Care Ltd | Health & social care | 2019 |
| R.E.M Detailing Limited | Administrative & support | 2025 |
| R.F.Hayward(Kelton Farms)Limited | Agriculture & fishing | 1949 |
| R.F.I. Technical Services Limited | Construction | 2012 |
| R.G. Gill and SON Ltd | Construction | 2008 |