| Kumari Kitchen Limited | Hospitality | 2012 |
| Kumari Properties Bath Ltd | Real estate | 2018 |
| Kunjoos Kitchen Ltd | Hospitality | 2025 |
| Kutuu Ltd | Wholesale & retail | 2013 |
| KVK Properties Ltd | Real estate | 2025 |
| Kvmb Limited | Wholesale & retail | 2019 |
| Kwabo Consulting Limited | Professional & scientific | 2024 |
| Kwik Clean Ltd | Water & waste | 2019 |
| Kwik Linen Hire Limited | Other services | 2026 |
| Kwik Stay Management Ltd | Real estate | 2021 |
| Kwik Waste Ltd | Water & waste | 2022 |
| Kwolla Ltd | Information & communication | 2025 |
| KWS Blank Canvas Music Publishing Ltd | Information & communication | 2019 |
| Kyan Properties Ltd | Real estate | 2017 |
| Kyero Ltd | Professional & scientific | 2020 |
| Kyero Media Holdings Ltd | Financial services | 2026 |
| Kyle Poleon Health & Wellness Consultancy Ltd | Arts & recreation | 2023 |
| Kyte and Kingfisher Consultants Limited | Professional & scientific | 2021 |
| L & H Hotels Limited | Hospitality | 2003 |
| L & M Procurement Limited | Wholesale & retail | 2026 |
| L & T General Trading Ltd | Other services | 2022 |
| L a Medica Limited | Professional & scientific | 2004 |
| L COX Construction Ltd | Construction | 2026 |
| L IS for Lion Limited | Financial services | 2023 |
| L T Studio Ltd | Professional & scientific | 2011 |
| L&A Painting Ltd | Construction | 2025 |
| L&C Nominees Limited | Professional & scientific | 2015 |
| L&G Events Europe Ltd | Hospitality | 2021 |
| L&K Inn Ltd | Hospitality | 2005 |
| L&M Bath Ltd | Construction | 2021 |
| L&M Mckay Ltd | Wholesale & retail | 2022 |
| L. Mccoy Drinks Limited | Manufacturing | 2016 |
| L. O. L. Investments Limited | Financial services | 2017 |
| L. P. Trading Limited | Wholesale & retail | 2007 |
| L.A. Gym Limited | Extraterritorial | 1986 |
| L.P. Contractors Limited | Construction | 2017 |
| L.S. POW & Sons Limited | Agriculture & fishing | 1976 |
| L2 (Bath) Limited | Households | 1981 |
| L3P Consultancy Ltd | Information & communication | 2017 |
| LA Bottega Limited | Wholesale & retail | 2006 |
| LA Taverna Bath Ltd | Hospitality | 2025 |
| LA Touche Consultancy Ltd | Administrative & support | 2023 |
| LA VIE EST Rose Ltd | Wholesale & retail | 2020 |
| LA Vita Nuova Limited | Other services | 2001 |
| Labuon Ltd | Professional & scientific | 2011 |
| Ladies of Bath Ltd | Other services | 2024 |
| Ladymead Management Company Limited | Households | 2011 |
| Laggan Gardens Management Company (Bath) Limited | Households | 1989 |
| Laggan House Management Company Limited | Real estate | 1991 |
| Lagola Limited | Professional & scientific | 1999 |
| Laiya Group Limited | Information & communication | 2023 |
| Lalitha Traders Ltd | Hospitality | 2025 |
| Lamalama Limited | Information & communication | 2023 |
| Lamb Industries Limited | Professional & scientific | 2010 |
| Lambridge Consulting Limited | Professional & scientific | 2025 |
| Lambridge Grange (Bath) Ltd | Households | 2009 |
| Lambridge House Renovation Limited | Construction | 1996 |
| Lambridge Place Developments Limited | Professional & scientific | 2009 |
| Lambridge Ventures Ltd | Wholesale & retail | 2018 |
| Lamputt Properties Limited | Households | 2025 |
| Lamsan Roses Limited | Wholesale & retail | 2026 |
| Lancelot Consulting Ltd | Construction | 2007 |
| Land Air Travels Private Limited | Administrative & support | 2024 |
| Land and Waterscapes Limited | Administrative & support | 2004 |
| Landman Systems Limited | Information & communication | 2008 |
| Landmark Bikes Ltd | Wholesale & retail | 2005 |
| Landmark Bristol LLP | | 2016 |
| Landmark Developments (Oakford House) Limited | Construction | 2004 |
| Landmark of Bath Limited | Professional & scientific | 2001 |
| Landmark PT Ltd | Professional & scientific | 1998 |
| Landmarque Management Limited | Households | 2006 |
| Landot Beauty Ltd | Manufacturing | 2024 |
| Landrecy Limited | Real estate | 2003 |
| Landrich Ltd | Professional & scientific | 2022 |
| Landscape Conservation Limited | Professional & scientific | 2017 |
| Landsmith Associates Limited | Professional & scientific | 2016 |
| Lanercost Group Ltd | Construction | 2020 |
| Langbrella Ltd | Education | 2017 |
| Langham Product Invention Ltd | Professional & scientific | 2015 |
| Langridge UK Investments Limited | Real estate | 2023 |
| Langsgable Limited | Households | 1979 |
| Language Commerce Limited | Administrative & support | 2005 |
| Language Point Teacher Education Ltd | Education | 2019 |
| Lansdown Beckford Consulting Ltd | Professional & scientific | 2015 |
| Lansdown Campsite Ltd | Hospitality | 2024 |
| Lansdown Capital Ltd | Professional & scientific | 2022 |
| Lansdown Crescent Management (Bath) Limited | Households | 1993 |
| Lansdown Day Nurseries Ltd. | Education | 1998 |
| Lansdown Electrical Ltd | Construction | 2023 |
| Lansdown Financial Services Ltd | Financial services | 2020 |
| Lansdown Golf Club Trading Limited | Arts & recreation | 2016 |
| Lansdown Grove Court (Bath) Limited | Professional & scientific | 1964 |
| Lansdown Heights (Bath) Management Limited | Administrative & support | 1997 |
| Lansdown Holdings UK Limited | Wholesale & retail | 2006 |
| Lansdown House Flats (Bath) Limited | Real estate | 1977 |
| Lansdown Investments LLP | | 2020 |
| Lansdown of Bath Limited | Wholesale & retail | 2000 |
| Lansdown Residential Ltd | Real estate | 2023 |
| Lansdown Road Mansions(Bath)Limited | Professional & scientific | 1966 |
| Lansdown Space Limited | Information & communication | 2024 |