| KSO UK Limited | Wholesale & retail | 2012 |
| L.H. Jennings (Mechanical) Limited | Wholesale & retail | 1970 |
| Landsman Financial Solutions Ltd | Financial services | 2005 |
| Latif Wembley Ltd | Other services | 2018 |
| Leandown Limited | Real estate | 1996 |
| Legpalm Limited | | 1984 |
| Leonard Jeffrey Limited | | 1969 |
| Lindsay Court Residents Management Company Limited | Households | 2005 |
| Litex Design Limited | Manufacturing | 2003 |
| Little Dreams Day Nursery Limited | Education | 2002 |
| LLD Construction Ltd | Construction | 2024 |
| London Immigration Advice and Appeal Services Limited | Professional & scientific | 2004 |
| London Property Surveyors Limited | Administrative & support | 2007 |
| Lovett Constructions Limited | Construction | 2007 |
| Luton Factory Installations Limited | | 1984 |
| Lynx Ventures Ltd | Real estate | 2004 |
| Lyons Carlton Limited | Manufacturing | 1944 |
| Machrealm Limited | Wholesale & retail | 1987 |
| Mak-Tek Limited | | 1984 |
| Malik Accountancy Services Ltd | Professional & scientific | 2005 |
| Manjit Virk Construction Ltd | Construction | 2026 |
| Mantra Properties Ltd | Real estate | 2007 |
| Marble Hill Fireplaces Limited | Construction | 1980 |
| Marquee Entec Limited | Administrative & support | 1979 |
| Marquee Home Ltd | Wholesale & retail | 2004 |
| Marquee Installations Limited | Construction | 2000 |
| Mercury Designs Limited | Wholesale & retail | 2005 |
| Meritplot Limited | | 1982 |
| Metrix Electrical Engineers & Contractors Limited | | 1987 |
| Miloes Plastering Ltd | Construction | 2014 |
| Mission Textiles Limited | Administrative & support | 2001 |
| Modus Bond Limited | Professional & scientific | 2006 |
| Money Management Financial Services Limited | | 1988 |
| Montago Limited | | 1980 |
| Morgan Berkeley Software Limited | Information & communication | 2002 |
| Morphun Research Limited | Manufacturing | 1995 |
| Mskca Ltd | Professional & scientific | 2003 |
| My Einstein Ltd | Administrative & support | 2006 |
| Myers of Wembley Limited | | 1964 |
| N K Properties Ltd | Real estate | 2003 |
| N R Formwork Limited | Construction | 2006 |
| New Rainbow Textiles Limited | Wholesale & retail | 1975 |
| Nive & Co UK Limited | Wholesale & retail | 2003 |
| NSB Property Co Ltd | Real estate | 2017 |
| O'Hara Property Investment Holding Company Limited | Financial services | 1985 |
| O'Sullivan Construction Limited | Construction | 1986 |
| Oasis Publishing Ltd | | 1988 |
| OM Property Ltd | Real estate | 2005 |
| Orley Farm School Trust | Education | 1959 |
| P S Decor Ltd | Construction | 2010 |
| Pamper for YOU Limited | Other services | 2018 |
| Pancroft UK Ltd | Construction | 2007 |
| Paradox the Design LAB Limited | Professional & scientific | 2022 |
| Peak Coaching Limited | Professional & scientific | 2006 |
| Pels Law Limited | Professional & scientific | 2013 |
| Pembroke Construction Limited | | 1972 |
| Pender Plating Limited | Extraterritorial | 1958 |
| Perdan Builders Limited | Construction | 1973 |
| Philip Dillon & Co. Limited | | 1984 |
| Plug and Socket Electrical Ltd | Construction | 2007 |
| Plugworth Limited | | 1978 |
| Pluperfect Ltd | Financial services | 2006 |
| Povington Limited | | 1976 |
| PR Investments Ltd | Real estate | 2013 |
| Prime Location Investments Limited | Real estate | 2007 |
| Primoco Ltd | Professional & scientific | 2020 |
| Principle Party Wall Surveyors Ltd | Other services | 2026 |
| Propmain Limited | Hospitality | 1994 |
| PVD Contractors Ltd | Construction | 2018 |
| Qayyum Consulting Limited | Wholesale & retail | 2005 |
| R C W W Limited | Information & communication | 2007 |
| R E Management & Development Ltd | Construction | 2005 |
| R.G. Cooper Sales Limited | | 1981 |
| Rallydale Limited | Transport & logistics | 1976 |
| Relliance Wholesale UK Limited | Wholesale & retail | 2004 |
| Ribblelane Residents Association Limited | Households | 1982 |
| RLJ Sport Therapy Clinic Ltd | Health & social care | 2015 |
| Rowallan Developments Ltd | Professional & scientific | 2004 |
| RRA Green Cross Limited | Manufacturing | 2006 |
| Rubihill Limited | Construction | 1975 |
| Ryan & Collins Limited | Construction | 1963 |
| S.H. Harrold Holdings Limited | Professional & scientific | 1937 |
| Sahan Society Centre Limited | Education | 2007 |
| SAI HNS & Sons Ltd | Wholesale & retail | 2011 |
| SAI Invest Limited | Real estate | 2016 |
| SAI TT Ltd | Hospitality | 2019 |
| Salamanda Design Studios Limited | | 1984 |
| Salisbury Road Management Company Limited | Households | 1977 |
| Sally ANN Law Limited | Other services | 2014 |
| Sand IT Ltd | Information & communication | 2007 |
| Sandkim Limited | | 1983 |
| SBK Properties Ltd | Real estate | 2005 |
| Scanfast Limited | Arts & recreation | 1984 |
| Scania Plumbing Heating & Contractors Limited | Wholesale & retail | 1990 |
| SDL Security Ltd | Construction | 2005 |
| Senstone Limited | Professional & scientific | 2000 |
| Services on Site Ltd | Construction | 2006 |
| Settrington Interiors Limited | Professional & scientific | 2009 |
| Shareworld Limited | Professional & scientific | 1986 |
| Shopcurious Ltd | Wholesale & retail | 2007 |