| Lottus Energy Limited | Rochester | 2023 |
| Lotus Vietnam Hospitality Ltd | London | 2026 |
| Louch Electrical Limited | Porth | 2017 |
| Louden Energy Limited | Tain | 2013 |
| Lough Hill Wind Farm Limited | Millbrook | 2004 |
| Loughloughan Wind Ltd | Cookstown | 2013 |
| Loughmallon Limited | Belfast | 2013 |
| Loughmourne Wind Limited | Carrickfergus | 2015 |
| Loughview Renewable Energy Limited | Ballymena | 2011 |
| Louis Electrical Engineering Services Ltd | Stanford-Le-Hope | 2014 |
| Louis Power Maintenance Services Ltd | Basildon | 2024 |
| Love 2 Save Ltd | London | 2018 |
| Love Business Group Limited | Bolton | 2007 |
| Love Efficient Homes Limited | Crook | 2020 |
| Love Your Earth Ltd | Oakham | 2020 |
| Lovedean Green Limited | London | 2020 |
| Lovedean Limited | London | 2012 |
| LOW Bills Marketing Ltd | Ilford | 2014 |
| LOW Burntoft Solar Limited | Reading | 2015 |
| LOW Carbon Biogas Holdings Limited | London | 2023 |
| LOW Carbon Canada Bioenergy Limited | London | 2022 |
| LOW Carbon Canada Solar Limited | London | 2023 |
| LOW Carbon Canada Solar Operations Limited | London | 2023 |
| LOW Carbon Eaas Limited | London | 2018 |
| LOW Carbon Finland Wind Limited | London | 2021 |
| LOW Carbon Generation and Trading Limited | Norwich | 2011 |
| LOW Carbon German Wind Limited | London | 2023 |
| LOW Carbon Germany Limited | London | 2022 |
| LOW Carbon Group Limited | Exeter | 2011 |
| LOW Carbon Holdco Limited | London | 2025 |
| LOW Carbon Hub Sandford Hydro Limited | Oxford | 2015 |
| LOW Carbon Investment Partners 1 Limited | London | 2018 |
| LOW Carbon Investment Partners Limited | London | 2018 |
| LOW Carbon Limited | London | 2021 |
| LOW Carbon Netherlands Limited | London | 2017 |
| LOW Carbon Netherlands Storage Limited | London | 2023 |
| LOW Carbon Opco Limited | London | 2021 |
| LOW Carbon Poland Limited | London | 2021 |
| LOW Carbon Poland W2E Limited | London | 2023 |
| LOW Carbon Poland Wind Limited | London | 2023 |
| LOW Carbon Rooftops Limited | Exeter | 2017 |
| LOW Carbon Solar Devco 2 Limited | London | 2018 |
| LOW Carbon Solar Investment Company 5 Limited | London | 2018 |
| LOW Carbon Solar Opco Limited | London | 2022 |
| LOW Carbon Solar Operations Holdings Limited | London | 2022 |
| LOW Carbon Solar Operations Limited | London | 2022 |
| LOW Carbon Solar Park 20 Limited | London | 2021 |
| LOW Carbon Solar Park 21 Limited | London | 2021 |
| LOW Carbon Solar Park 27 Limited | London | 2021 |
| LOW Carbon Solar Park 28 Limited | London | 2022 |
| LOW Carbon Solar Park 30 Limited | London | 2022 |
| LOW Carbon Solar Park 32 Limited | London | 2022 |
| LOW Carbon Solar Park 33 Limited | London | 2022 |
| LOW Carbon Solar Park 34 Limited | London | 2022 |
| LOW Carbon Solar Park 35 Limited | London | 2022 |
| LOW Carbon Solar Park 36 Limited | London | 2022 |
| LOW Carbon Solar Park 37 Limited | London | 2022 |
| LOW Carbon Solar Park 38 Limited | London | 2022 |
| LOW Carbon Solar Park 39 Limited | London | 2022 |
| LOW Carbon Solar Park 40 Limited | London | 2022 |
| LOW Carbon Solar Park 41 Limited | London | 2022 |
| LOW Carbon Solar Park 42 Limited | London | 2022 |
| LOW Carbon Solar Park 43 Limited | London | 2022 |
| LOW Carbon Solar Park 44 Limited | London | 2022 |
| LOW Carbon Solar Park 46 Limited | London | 2022 |
| LOW Carbon Solar Park 47 Limited | London | 2022 |
| LOW Carbon Solar Park 48 Limited | London | 2023 |
| LOW Carbon Solar Park 49 Limited | London | 2023 |
| LOW Carbon Solar Park 50 Limited | London | 2023 |
| LOW Carbon Solar Park 51 Limited | London | 2023 |
| LOW Carbon Solar Park 52 Limited | London | 2023 |
| LOW Carbon Solar Park 53 Limited | London | 2023 |
| LOW Carbon Solar Park 54 Limited | London | 2023 |
| LOW Carbon Solar Park 55 Limited | London | 2023 |
| LOW Carbon Solar Park 56 Limited | London | 2023 |
| LOW Carbon Solar Park 57 Limited | London | 2023 |
| LOW Carbon Solar Park 6 Limited | London | 2020 |
| LOW Carbon Storage Ireland Limited | London | 2018 |
| LOW Carbon Sweden Solar Limited | London | 2021 |
| LOW Carbon UK Solar Investco 1 Limited | London | 2023 |
| LOW Carbon UK Solar Investco 2 Limited | London | 2023 |
| LOW Carbon UK Solar Investco 3 Limited | London | 2023 |
| LOW Carbon UK Solar Investment Company Limited | London | 2018 |
| LOW Carbon UK Solar Operations Limited | London | 2022 |
| LOW Carbon UK Wind Development Company Limited | London | 2020 |
| LOW Carbon UK Wind Holdings Limited | London | 2023 |
| LOW Carbon UK Wind Limited | London | 2023 |
| LOW Carbon US Holdings Limited | London | 2022 |
| LOW Carbon Ventures Limited | Exeter | 2011 |
| LOW Carbon W2E2 Limited | London | 2020 |
| LOW Carbon Wind Farm 1 Limited | London | 2023 |
| LOW Carbon Wind Investment Company 1 Limited | London | 2014 |
| LOW Carbon Windco 1 Limited | London | 2021 |
| LOW Cost Renewables Ltd | Bristol | 2023 |
| LOW Energy Lighting Solutions Ltd | Hartlepool | 2008 |
| LOW Energy Systems Limited | Hemel Hempstead | 2013 |
| LOW Farm Energy Ltd | Leeds | 2014 |
| LOW Farm Renewables Limited | Cottingham | 2015 |
| LOW Farm Solar Limited | London | 2020 |
| LOW Farm Solar Project Limited | London | 2021 |