| Quidhampton Developments Limited | Construction | 2018 |
| Quinn Vodka Ltd | Wholesale & retail | 2025 |
| Quintana.Ai Ltd | Information & communication | 2024 |
| Quinton Grange View Limited | Households | 2023 |
| Quiraing Stone Limited | Information & communication | 2026 |
| Quirk Homes Limited | Real estate | 2021 |
| Quirk Smith Energy Ltd | Professional & scientific | 2023 |
| Quirky Quests Ltd | Information & communication | 2023 |
| Quote ME Goods Limited | Wholesale & retail | 2023 |
| Quoteflow Ltd | Professional & scientific | 2026 |
| R & a London Investments 2 Limited | Real estate | 2025 |
| R & a London Investments Limited | Real estate | 2024 |
| R & C Construction (Essex) Limited | Construction | 2018 |
| R & D Advisors Limited | Professional & scientific | 2019 |
| R & J Environmental Services Limited | Manufacturing | 2012 |
| R & J Roofing & Building Ltd | Construction | 2020 |
| R & M Retail Enterprise Ltd | Wholesale & retail | 2026 |
| R & R Brickwork Limited | Construction | 2008 |
| R & R Chad Ltd | Hospitality | 2022 |
| R Accountants Ltd | Professional & scientific | 2022 |
| R C Asphalt Ltd | Construction | 2023 |
| R C B Plant & Vehicle Hire Limited | Administrative & support | 2015 |
| R C Construction & Property Services Ltd | Construction | 2023 |
| R Cheke & Co Limited | Professional & scientific | 2005 |
| R Dowie Consultancy Limited | Other services | 2026 |
| R Enoizi Design Limited | Professional & scientific | 2016 |
| R Facer Associates Ltd | Professional & scientific | 2019 |
| R I Wheate Construction Limited | Construction | 2025 |
| R J W Electrical Contractors (Essex) Limited | Construction | 2017 |
| R J Wakefield Limited | Transport & logistics | 2011 |
| R James Motoring Ltd | Wholesale & retail | 2023 |
| R M Walsh Limited | Wholesale & retail | 2019 |
| R Open and SON Limited | Transport & logistics | 1989 |
| R S a Geotechnics Limited | Construction | 1980 |
| R Samuel Propertys Limited | Real estate | 2021 |
| R W Signs & Graphics Ltd | Administrative & support | 2006 |
| R&B Foods Ltd | Manufacturing | 2020 |
| R&C Smile Ltd | Health & social care | 2020 |
| R&Cw (Thundersley) Limited | Construction | 2025 |
| R&Cw Limited | Construction | 2019 |
| R&E Commercial Limited | Real estate | 2020 |
| R&E Property Limited | Real estate | 2017 |
| R&K Solutions (South East) Ltd | Construction | 2022 |
| R&R Accounting & Taxation Services Limited | Professional & scientific | 2014 |
| R&R Architects Limited | Professional & scientific | 2014 |
| R&R Mini Mart Ltd | Wholesale & retail | 2025 |
| R&R Promotions Ltd | Extraterritorial | 2012 |
| R&R Solid Cleaning Limited | Administrative & support | 2012 |
| R. a. Wells & SON Haulage Ltd | Transport & logistics | 2025 |
| R. C. Boreham & Co Limited | Transport & logistics | 2005 |
| R. Jenkins Ltd | Construction | 2007 |
| R.A.C.E Contracts Ltd | Construction | 2018 |
| R.A.F.R Investments Ltd | Financial services | 2013 |
| R.C. Landforce Limited | Agriculture & fishing | 2005 |
| R.E.C. Southeast Limited | Real estate | 2005 |
| R.G.P Graphic Systems Limited | Extraterritorial | 2019 |
| R.H. Developments (Essex) Limited | Construction | 2006 |
| R.L.P Investments Limited | Professional & scientific | 2019 |
| R.Parks Construction Ltd | Construction | 2014 |
| R.R.R Recycling Solutions Limited | Water & waste | 2008 |
| R.S. Computers Limited | Information & communication | 2010 |
| R.S.V.P Consulting Limited | Other services | 2013 |
| R.T.Bennett(Theydon Bois)Limited | Construction | 1964 |
| R.W. Crawford Agricultural Machinery Limited | Wholesale & retail | 1983 |
| R.W. Stevens Limited | Professional & scientific | 2003 |
| RA Coaching Limited | Arts & recreation | 2018 |
| Raahimania Ltd | Wholesale & retail | 2019 |
| Raajasimman Enterprise Ltd | Information & communication | 2016 |
| Raakmedics Limited | Education | 2023 |
| Rabbit Rabbit Limited | Information & communication | 2002 |
| Racehorse Lottery Limited | Extraterritorial | 2001 |
| Radfab Limited | Manufacturing | 2006 |
| Radhakrishna Entertainments Ltd | Information & communication | 2023 |
| Radiance Cleaning Services Ltd | Administrative & support | 2024 |
| Radiant Care Companions Ltd | Health & social care | 2025 |
| Radiant Floor Solutions Ltd | Construction | 2022 |
| Radiant Heating & Plumbing Limited | Construction | 2012 |
| Radiant Ones CIC | Education | 2026 |
| Radical Bikes Community Interest Company | Arts & recreation | 2009 |
| Radical Design Associates Ltd | Construction | 1999 |
| Radio Chelmsford CIC | Information & communication | 2021 |
| Radio City Social Limited | Hospitality | 2021 |
| Radio Control Publishing Ltd | Information & communication | 2017 |
| Radley Capital & Futures Limited | Information & communication | 2024 |
| RAF Transport Ltd | Transport & logistics | 2018 |
| Raga Consultancy Services Ltd | Professional & scientific | 2012 |
| Ragnar Security Ltd | Administrative & support | 2007 |
| Raheena Holdings Ltd | Real estate | 2020 |
| Rahman Tax Consultancy Ltd | Professional & scientific | 2022 |
| RAI Venture Ltd | Wholesale & retail | 2024 |
| Raiaura Limited | Education | 2022 |
| Raikmo Consulting Ltd | Information & communication | 2025 |
| Railway Square (Chelmsford) LLP | | 2021 |
| Rain Team Cleaning Services Ltd | Administrative & support | 2016 |
| Rainbow Diagnostics Ltd | Professional & scientific | 2021 |
| Rainbow Gifts & Prints Ltd | Manufacturing | 2019 |
| Rainbow Retail Vibe Limited | Information & communication | 2019 |
| Raine London Ltd | Wholesale & retail | 2018 |
| Rainham Construction Limited | Construction | 2022 |
| Rainham Properties Limited | Real estate | 2012 |