| Reeves Law Limited | Other services | 2016 |
| Regal Place Freehold Company Limited | Households | 2019 |
| Regen Enviro UK (Service) Limited | Manufacturing | 2025 |
| Regen Enviro UK Limited | Wholesale & retail | 2025 |
| Regency Homes Limited | Construction | 2012 |
| Regency Homes Management Services Limited | Administrative & support | 2014 |
| Regency Park Hotel Limited | Hospitality | 2011 |
| Regional Covert Solutions Limited | Administrative & support | 2011 |
| Regspec Limited | Professional & scientific | 2024 |
| Resicrete Ltd | Construction | 2018 |
| Restless Limited | Professional & scientific | 2016 |
| Restock (Supplies) Limited | Administrative & support | 2015 |
| Restock Resources Limited | Wholesale & retail | 2013 |
| Reviewboat Ltd | Administrative & support | 2025 |
| Reviver Foods Limited | Manufacturing | 2024 |
| Rhdatastorage Limited | Administrative & support | 2005 |
| Rhinefield Holdings Limited | Other services | 2018 |
| Rhinefield Properties Limited | Real estate | 2017 |
| RHO Developments Ltd | Real estate | 2020 |
| Rhys Roberts Financial Planning Limited | Financial services | 2024 |
| RIA Heritage Limited | Real estate | 2021 |
| Richard Wincott Limited | Information & communication | 2025 |
| Richmond Court (Loughton) Limited | Households | 1993 |
| Richmond Court (Shoeburyness) Management Limited | Households | 1988 |
| Ringside Fitness Centre Limited | Arts & recreation | 2019 |
| Ringside Property Limited | Households | 2019 |
| Ripped Labz Nutrition Ltd | Wholesale & retail | 2016 |
| Riveroconsult Ltd | Information & communication | 2020 |
| Rivers Multi Academy Trust | Education | 2011 |
| Riverway Properties Ltd. | Construction | 1993 |
| RJ Ventilation Ltd | Energy | 2006 |
| RJM Telecoms Ltd | Information & communication | 2013 |
| RM Training (UK) Limited | Education | 2012 |
| RND Homes Limited | Real estate | 2019 |
| RNG Limited | Transport & logistics | 2008 |
| RO24 Harlow Management Company Limited | Real estate | 2004 |
| RO24 Royston Management Company Limited | Real estate | 2007 |
| ROB Fulton Construction Services Limited | Professional & scientific | 2015 |
| Rolls Chingford (Management) Limited(The) | Households | 1968 |
| ROM Sports Tours and Leisure Limited | Administrative & support | 2025 |
| Ronnie's Kitchen Events Limited | Hospitality | 2024 |
| Ronnie's Kitchen Ltd | Hospitality | 2020 |
| Roofspace Ltd | Construction | 2020 |
| Rosie Mcclelland Productions Limited | Arts & recreation | 2014 |
| Roundhouse Associates Ltd | Administrative & support | 2002 |
| Route to Market Media Ltd | Professional & scientific | 2019 |
| RS Plumbing Repairs Ltd | Construction | 2026 |
| Ruby's Cuisine UK Ltd | Hospitality | 2018 |
| Ruby's Events Ltd | Hospitality | 2023 |
| Rune Studio Ltd | Wholesale & retail | 2023 |
| Rymar Group Ltd | Construction | 2023 |
| S & H Commercial Refurbishment Ltd | Construction | 2006 |
| S & M Hospitality Ltd | Hospitality | 2018 |
| S T S Taxis Limited | Transport & logistics | 2014 |
| S W Inspectorate Limited | Construction | 1995 |
| S2 Fitness Ltd | Arts & recreation | 2015 |
| SAC Civil Engineering Services Ltd | Other services | 2015 |
| SAD Machine Animation Limited | Information & communication | 2024 |
| Safeguarding Solutions for Children Ltd | Health & social care | 2010 |
| Sage & Maple Ltd | Wholesale & retail | 2026 |
| Saif Action | Administrative & support | 2026 |
| Saint Helens Mews Management Company Ltd | Households | 2006 |
| Salisbury & Salisbury Residential Ltd | Real estate | 2021 |
| Salon Revive Ltd | Wholesale & retail | 2025 |
| Samspencer Properties Ltd | Real estate | 2019 |
| Sarah Vickers Inclusion Consultant Ltd | Education | 2019 |
| Savannah Lodge Limited | Health & social care | 2017 |
| Sawbridgeworth Antiques Ltd | Wholesale & retail | 2022 |
| Sawbridgeworth Heating Limited | Construction | 2024 |
| Saxon Ridge Ltd | Construction | 2024 |
| SB Coaching Services Ltd | Other services | 2025 |
| SBT Contractors Ltd | Construction | 2024 |
| Schilward Motors Limited | Wholesale & retail | 1975 |
| Scout'D Ltd. | Arts & recreation | 2025 |
| Scrd Ltd | Water & waste | 2024 |
| Screen Outdoor Limited | Hospitality | 2016 |
| Seagrave Waste Recycling Limited | Transport & logistics | 2001 |
| Sector Holdings Limited | Financial services | 2019 |
| Sector Intelligence Limited | Administrative & support | 2018 |
| Secure Technik Limited | Administrative & support | 2025 |
| Securecom (Herts & Essex) Limited | Administrative & support | 2012 |
| Seda Somatics Ltd | Health & social care | 2025 |
| Seed Capital Limited | Professional & scientific | 2018 |
| Selfie Stars Limited | Arts & recreation | 2018 |
| Selina Medical Limited | Health & social care | 2014 |
| Sella Maisons Ltd | Real estate | 2024 |
| Serenity Retreats by Sarah Ltd | Arts & recreation | 2023 |
| Servicio Europe Ltd | Financial services | 2007 |
| Seven Heating Limited | Construction | 2024 |
| SEW Good Ltd | Manufacturing | 2021 |
| Seymour Mews Limited | Administrative & support | 1988 |
| SGV Technologies Limited | Information & communication | 2017 |
| Sheering Holdings Limited | Administrative & support | 2022 |
| Shelby Developments Ltd | Construction | 2018 |
| Shelley's Cleaning Ltd | Administrative & support | 2024 |
| Shendish Hotel Ltd | Hospitality | 2009 |
| Shengtai Enterprise Ltd | Hospitality | 2025 |
| Shifting Perspectives Limited | Professional & scientific | 2023 |
| Shine Your Light Skincare Limited | Manufacturing | 2024 |
| Shireways Property Management Limited | Households | 1982 |