| Company | Timeline | Status | |
| National Grid Belgium Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→11 Sep 2021 | Dissolved | |
| National Grid Twenty-Five Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→7 Sep 2021 | Dissolved | |
| National Grid Blue Power Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→7 Sep 2021 | Dissolved | |
| National Grid Thirty Five Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→7 Sep 2021 | Dissolved | |
| National Grid Seventeen Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→7 Sep 2021 | Dissolved | |
| Lattice GPS (Letters Of Credit) Nominee Limited Secretary • Unreported | 30 Nov 2018←3 Years→24 May 2022 | Dissolved | |
| National Grid Fourteen Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→7 Sep 2021 | Dissolved | |
| National Grid Four Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→7 Sep 2021 | Dissolved | |
| NGT Telecom No. 1 Limited Secretary • Unreported | 30 Nov 2018←2 Years 9 Months→4 Sep 2021 | Dissolved | |
| National Grid Offshore Limited Secretary • Unreported | 30 Nov 2018←3 Years→18 Nov 2022 | Active | |
