| Redbrick Plastering Ltd | Construction | 2016 |
| Redbridge Auto Traders Ltd | Wholesale & retail | 2020 |
| Redbridge Back Pain Clinic Ltd | Health & social care | 2018 |
| Redbridge Bengali Association | Other services | 1997 |
| Redbridge Bengali Welfare Society | Other services | 2008 |
| Redbridge Builders Merchants Limited | Wholesale & retail | 2007 |
| Redbridge Carers Support Service | Other services | 1994 |
| Redbridge Citizens Advice Bureau | Other services | 2001 |
| Redbridge Community Action Group Ltd | Health & social care | 2024 |
| Redbridge Community Football Club Ltd | Education | 2021 |
| Redbridge Construction Services Limited | Construction | 2016 |
| Redbridge Court Investment Limited | Real estate | 2007 |
| Redbridge Developers Limited | Construction | 2016 |
| Redbridge Developers SE1 Limited | Construction | 2017 |
| Redbridge DIY Stores Ltd | Wholesale & retail | 2025 |
| Redbridge Double Glazing Limited | Construction | 2019 |
| Redbridge Electrical & Heating Ltd | Construction | 2018 |
| Redbridge Environmental Pest Control Ltd | Construction | 2024 |
| Redbridge Express Ltd | Wholesale & retail | 2026 |
| Redbridge Fire Ltd | Professional & scientific | 2022 |
| Redbridge Forum | Health & social care | 2001 |
| Redbridge Green Fair Association | Other services | 2016 |
| Redbridge Group Limited | Real estate | 2017 |
| Redbridge Hearing Clinic CIC | Wholesale & retail | 2026 |
| Redbridge Hotel Limited | Hospitality | 2004 |
| Redbridge Ilford Holdings Limited | Real estate | 2023 |
| Redbridge Independents Limited | Extraterritorial | 2026 |
| Redbridge Islamic Centre | Education | 2000 |
| Redbridge Jewish School Charity | Education | 1993 |
| Redbridge Leasehold Limited | Real estate | 2025 |
| Redbridge Maintenance Services Limited | Manufacturing | 2018 |
| Redbridge Manor Estates Ltd | Real estate | 2021 |
| Redbridge Muslim Burials Service Limited | Other services | 2021 |
| Redbridge Pharmacy Ltd | Wholesale & retail | 2021 |
| Redbridge Plumbing & Heating Merchants Ltd | Wholesale & retail | 2012 |
| Redbridge Properties Limited | Real estate | 2020 |
| Redbridge Property Group Ltd | Real estate | 2023 |
| Redbridge Property Ltd | Real estate | 2017 |
| Redbridge Property Management Ltd | Real estate | 2026 |
| Redbridge Refurbs Limited | Construction | 2018 |
| Redbridge Roofing Specialists Ltd | Construction | 2026 |
| Redbridge Superstore Ltd | Wholesale & retail | 2019 |
| Redbridge Tamil Cultural Association (Rtca) C.I.C. | Education | 2014 |
| Redbridge Welfare Association UK | Health & social care | 2015 |
| Redburn Properties Limited | Real estate | 2007 |
| Redcastle Lettings Ltd | Real estate | 2012 |
| Redcliff Limited | Real estate | 2026 |
| Redcurrant Gardens Property Ltd | Real estate | 2018 |
| Redhawk Buildworks Ltd | Construction | 2025 |
| Redif Properties Limited | Real estate | 2024 |
| Redline Photography Ltd | Professional & scientific | 2013 |
| Redmans Property Limited | Construction | 2013 |
| Rednest Creative Ltd | Professional & scientific | 2022 |
| Redricks Consultancy Services Limited | Professional & scientific | 2018 |
| Redricks Property Services Limited | Financial services | 2025 |
| Redrob Promotions Limited | Wholesale & retail | 2014 |
| Redrock Decorators Ltd | Construction | 2022 |
| Redway Estates Ltd | Real estate | 2011 |
| Redwood Residences Ltd | Real estate | 2023 |
| Redwood Shopfront Ltd | Construction | 2020 |
| Redwood UK Property Ltd | Hospitality | 2025 |
| Reeani Stays Ltd | Real estate | 2022 |
| Reed Mansions Management Co. Limited | Households | 1977 |
| Reedeveloped Ltd | Real estate | 2019 |
| Reedone Services Limited | Hospitality | 2020 |
| Reehal Limited | Wholesale & retail | 2020 |
| Reej Ltd | Real estate | 2025 |
| Reelforyou Ltd | Wholesale & retail | 2025 |
| Reem Media Services Limited | Information & communication | 2016 |
| Reena BAL Ltd | Construction | 2019 |
| Reet Service Ltd | Administrative & support | 2025 |
| Reeves Projects Limited | Construction | 2013 |
| Referpark Consulting Services Ltd | Professional & scientific | 2025 |
| Refine Trading Limited | Transport & logistics | 2016 |
| Refined Media LDN Ltd | Professional & scientific | 2024 |
| Refined Precious Metals Holdings Ltd | Other services | 2014 |
| Refined Studios LDN Ltd | Other services | 2021 |
| Refined Vision Limited | Wholesale & retail | 2019 |
| Reflected Supervision Ltd | Education | 2025 |
| Reflection Media Production Ltd | Professional & scientific | 2015 |
| Reflections Medics Ltd | Health & social care | 2022 |
| Reflex Estate Limited | Construction | 2019 |
| Reformaluxe Ltd | Construction | 2025 |
| Reformer Limited | Construction | 2016 |
| Refresh Wholesale Ltd | Wholesale & retail | 2024 |
| Refurbique Refurbishment Limited | Households | 2024 |
| Regal CT Express Ltd | Wholesale & retail | 2015 |
| Regal Energy Limited | Professional & scientific | 2004 |
| Regal Estates Global Ltd | Real estate | 2025 |
| Regal Law Solicitors Ltd | Professional & scientific | 2009 |
| Regal Pack Ltd | Administrative & support | 2023 |
| Regal Rooms and Property Management Ltd | Real estate | 2025 |
| Regal Solicitors Limited | Professional & scientific | 2014 |
| Regal Universal Ltd | Wholesale & retail | 2019 |
| Regalis SOL Ltd | Construction | 2024 |
| Regan Consultants Limited | Administrative & support | 2019 |
| Regductwork Ltd | Construction | 2023 |
| Regency (South Woodford) Management Company Limited | Households | 2004 |
| Regency London Holdings Ltd | Real estate | 2020 |
| Regency Ltd | Real estate | 2003 |