| Innovative Coffee Ltd | Wholesale & retail | 2020 |
| Innovative Engineering Systems Limited | Mining & quarrying | 1994 |
| Innovative Plans LP | | 2013 |
| Innovative Professional Installations Ltd | Other services | 2023 |
| Innovator Sports Management Limited | Arts & recreation | 2012 |
| Innovatrixx Ltd | Information & communication | 2023 |
| Innovent Investment LP | | 2004 |
| Innovent Partner Limited | Administrative & support | 2003 |
| Innoveytrade LP | | 2014 |
| Innovi Business Growth Limited | Professional & scientific | 2011 |
| Innovius Line LP | | 2016 |
| Innovun Ventures LP | | 2017 |
| Innoway Solutions LP | | 2016 |
| Innpractice Limited | Hospitality | 2024 |
| Inocasa Limited | Administrative & support | 2024 |
| Inoqa Limited | Information & communication | 2021 |
| Inoum Solutions Limited | Information & communication | 2026 |
| Inout Capital LP | | 2016 |
| Inova Geophysical (UK) Limited | Information & communication | 2009 |
| Inovamind Ltd | Information & communication | 2017 |
| Inovera Limited | Transport & logistics | 2026 |
| Inpenta Group LP | | 2012 |
| Inpersca Limited | Financial services | 2017 |
| Input Learning Technologies Limited | Information & communication | 2017 |
| Inputoryx Response Mapping Ltd | Information & communication | 2026 |
| INR Systems Ltd | Information & communication | 2026 |
| Inreach Ventures I Carried Interest GP LLP | | 2018 |
| Inreach Ventures I Carried Interest LP | | 2018 |
| Inreach Ventures II Carried Interest GP LLP | | 2025 |
| Inreach Ventures II Carried Interest LP | | 2025 |
| INS Associates LP | | 2014 |
| INS Plus LP | | 2017 |
| Insafety Ventures LP | | 2013 |
| Insane Productions Ltd | Arts & recreation | 2024 |
| Inse Education Ltd | Education | 2025 |
| Insefy Holding LP | | 2024 |
| Insh Island Limited | Real estate | 2024 |
| Inside Education LP | | 2020 |
| Inside NO.7 Ltd | Wholesale & retail | 2022 |
| Inside OUT Personal Training Ltd | Other services | 2018 |
| Inside the Rustic Kitchen Limited | Information & communication | 2023 |
| Insideout Learning Ltd | Education | 2012 |
| Insider Trading Group LP | | 2016 |
| Insight Experts LP | | 2016 |
| Insight Global Ventures Synergy Ltd | Mining & quarrying | 2024 |
| Insight Management Developments L.P. | | 2009 |
| Insight Process Solutions Ltd | Professional & scientific | 2018 |
| Insight Residential Real Estate NO. 1 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 10 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 11 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 12 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 13 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 14 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 15 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 16 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 2 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 3 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 4 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 5 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 6 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 7 Limitedpartnership | | 2006 |
| Insight Residential Real Estate NO. 8 Limited Partnership | | 2006 |
| Insight Residential Real Estate NO. 9 Limited Partnership | | 2006 |
| Insight Software Development International Ltd | Information & communication | 2020 |
| Insight Software Edinburgh Ltd | Information & communication | 2015 |
| Insight Source LP | | 2016 |
| Insight Ventures LP | | 2016 |
| Insightcraft Systems Ltd | Extraterritorial | 2025 |
| Insighting Ltd | Information & communication | 2021 |
| Insitea Ltd | Professional & scientific | 2025 |
| Insitu Building Company Limited | Construction | 2009 |
| Insolvency Support Services Limited | Administrative & support | 2018 |
| Inspirabuilt Developments Ltd | Construction | 2025 |
| Inspiration Asylum Ltd | Professional & scientific | 2016 |
| Inspire Build & Design Group Ltd | Construction | 2026 |
| Inspire Centre for Learning & Development Limited | Education | 2026 |
| Inspire Design & Build (Edin) Ltd | Construction | 2023 |
| Inspire Expres Limited | Manufacturing | 2025 |
| Inspire More Productions LP | | 2021 |
| Inspire Search Ltd | Professional & scientific | 2017 |
| Inspire Travel Dundee Limited | Other services | 2018 |
| Inspired by Events Ltd | Administrative & support | 2017 |
| Inspired Edinburgh Ltd | Information & communication | 2019 |
| Inspired Promotions L.P. | | 2011 |
| Inspired Solutions Europe L.P. | | 2010 |
| Inspiring Hair Limited | Other services | 2015 |
| Inspiring Scotland | Other services | 2008 |
| Inspiring Solutions Scotland Limited | Administrative & support | 2015 |
| Inspirit Co-Investment II LP | | 2023 |
| Inspirit FP I LP | | 2019 |
| Inspirit FP II LP | | 2023 |
| Inspirit Number Two Limited | Financial services | 2019 |
| Insprint IDP Limited | Information & communication | 2019 |
| Install Solar Ltd | Construction | 2018 |
| Instant Business Services L.P. | | 2012 |
| Instant Engineering Solutions Limited | Construction | 2017 |
| Instant Supreme LP | | 2016 |
| Instapivot Solutions Ltd | Other services | 2023 |
| Instar Domus Ltd | Real estate | 2023 |
| Instastew 1 UK Limited | Health & social care | 2023 |