| A & R Timber Products Limited | Manufacturing | 2005 |
| Adaero Property Investments Limited | Real estate | 2016 |
| Adaero Serviced Accommodation Ltd | Hospitality | 2017 |
| Adaero Serviced Accomodation West Ltd | Real estate | 2022 |
| ADV. Three Ltd | Arts & recreation | 2019 |
| ADV. Two Ltd | Arts & recreation | 2019 |
| Alexander Ritchie & SON, Limited | Manufacturing | 1950 |
| Anabytics Limited | Administrative & support | 2011 |
| Art Collective East Lothian CIC | Arts & recreation | 2025 |
| Ask-H Subsea Cable Burial Consultants Ltd | Professional & scientific | 2022 |
| Athena Blinds Interiors Limited | Wholesale & retail | 2007 |
| Bass Rock Films Ltd | Information & communication | 2018 |
| BE Wild Coaching and Consulting Ltd | Health & social care | 2023 |
| BMG Consultants LLP | | 2018 |
| Burt Financial Planning Ltd | Financial services | 2021 |
| Buy Together Ltd | Information & communication | 2026 |
| C2 Collection Ltd | Wholesale & retail | 2026 |
| Callander&Co Ltd | Professional & scientific | 2026 |
| Carston Homes Limited | Construction | 2022 |
| Catherine Wheels Theatre Company Limited | Arts & recreation | 2000 |
| Chill East Lothian CIC | Education | 2022 |
| Coorie East Lothian Ltd | Professional & scientific | 2025 |
| Craw Widdie Construction Ltd | Construction | 2013 |
| Crown & Kitchen Guest House Limited | Hospitality | 2016 |
| D7 Engineering Limited | Professional & scientific | 2010 |
| Decof Ltd | Manufacturing | 2024 |
| Designers' Friend Ltd | Information & communication | 2012 |
| Devenir Plus Ltd | Information & communication | 2014 |
| Duddingston Bakery Ltd. | Transport & logistics | 2002 |
| East Linton GIN Ltd | Professional & scientific | 2025 |
| Eco Install Scotland Ltd | Construction | 2013 |
| Eden Architectural Conservation Ltd | Construction | 2023 |
| Fathom Behavioural Science Ltd | Professional & scientific | 2024 |
| Fidra Digital Ltd | Information & communication | 2022 |
| Fortro Ltd | Professional & scientific | 2020 |
| Foxlake Adventures Community Interest Company | Arts & recreation | 2012 |
| Fraser Burgess Limited | Information & communication | 2011 |
| Futuristic Marketing (UK) Limited | Professional & scientific | 1999 |
| G Brown Stonemason Limited | Construction | 2006 |
| Gastropub Hospitality Limited | Hospitality | 2013 |
| Hatbx Limited | Manufacturing | 2018 |
| Healthtech Venture Building Limited | Professional & scientific | 2024 |
| Horizon Studios Ltd | Wholesale & retail | 2024 |
| Imaginary Plane Ltd | Professional & scientific | 2010 |
| Inverkeithing Developments Limited | Construction | 2007 |
| Iuvenis Mercator Limited | Wholesale & retail | 2024 |
| J C Innes (Blacksmiths) Limited | Professional & scientific | 2000 |
| James Dixon Ltd | Construction | 2008 |
| James Inter Trans Scotland Limited | Information & communication | 2002 |
| Jammy Enterprise Ltd | Manufacturing | 2012 |
| Janefield Produce Ltd | Manufacturing | 2025 |
| Kerr Rodgie Limited | Arts & recreation | 2014 |
| Kingdom Audio Ltd | Information & communication | 2025 |
| Leebar Engineering Limited | Professional & scientific | 2019 |
| Liftango Group Limited | Information & communication | 2021 |
| Linton Cuisine Ltd | Hospitality | 2025 |
| Linton Service Station Limited | Wholesale & retail | 2012 |
| Lock Stock Sporting Limited | Arts & recreation | 2024 |
| Lock Stock Studios Ltd | Information & communication | 2023 |
| Lyntoun Consultancy Limited | Extraterritorial | 2011 |
| Made in East Lothian C.I.C. | Arts & recreation | 2016 |
| MAJESTIC808. Ltd | Public administration | 2022 |
| Mart Farm Shop and Cafe Ltd | Wholesale & retail | 2021 |
| Milsey Limited | Professional & scientific | 2023 |
| Move Summit Ltd | Administrative & support | 2024 |
| MS Property LET Ltd | Real estate | 2023 |
| Mussleburgh High ST Apartments Ltd | Households | 2017 |
| NB Content Limited | Professional & scientific | 2022 |
| Night OWL Books Ltd | Wholesale & retail | 2022 |
| OAT Scotland Ltd | Manufacturing | 2019 |
| Paws and Paths Ltd | Other services | 2025 |
| Prawn Wild Limited | Wholesale & retail | 2011 |
| Puffin Tech Ltd | Information & communication | 2024 |
| Pwhr Ltd | Professional & scientific | 2020 |
| Pyrus Flowers Ltd | Wholesale & retail | 2012 |
| Pystri Ltd | Arts & recreation | 2026 |
| Quick Digs Limited | Real estate | 2006 |
| R & M Bespoke Ltd | Manufacturing | 2019 |
| R. French Stonemasonry Ltd | Manufacturing | 2023 |
| Robertson Builders & Co Limited | Construction | 2024 |
| SG Photo Ltd | Professional & scientific | 2024 |
| Shona Reppe Puppets | Arts & recreation | 2004 |
| Smeaton Estate Limited | Agriculture & fishing | 2015 |
| SR (Scotland) Ltd | Manufacturing | 2021 |
| Steading System Software LLP | | 2005 |
| Tartan Door Ltd | Information & communication | 2009 |
| Tartan Roof Ltd | Real estate | 2018 |
| THE Digital AGE Ltd | Information & communication | 2015 |
| THE Yoga DEN Ltd | Other services | 2024 |
| Torness Motors Limited | Wholesale & retail | 2015 |
| Transformergise Ltd | Professional & scientific | 2025 |
| Traprain Consultants Ltd. | Professional & scientific | 1999 |
| Traprain Transport Ltd | Transport & logistics | 2025 |
| Tse's Fruitmarket Ltd. | Transport & logistics | 2001 |
| TÙR Strategic Partners Ltd | Professional & scientific | 2025 |
| Velaris Hudson Limited | Financial services | 2026 |
| Wharton Property Limited | Real estate | 2016 |
| Wild Shore Blackpool Ltd | Arts & recreation | 2018 |
| Wild Shore Delamere Ltd | Arts & recreation | 2018 |
| Wild Shore Dundee Ltd | Arts & recreation | 2017 |