| Company | Timeline | Status | |
| Spectrum Energy And Information Technology Limited Director • Lawyer | 30 Jul 2020←1 Year 11 Months→28 Jun 2022 | Dissolved | |
| Geoscan Limited Director • Lawyer | 30 Jul 2020←1 Year 9 Months→3 May 2022 | Dissolved | |
| Spectrum Resources Limited Director • Lawyer | 30 Jul 2020←1 Year 9 Months→3 May 2022 | Dissolved | |
| Spectrum Datagraphic Systems International Limited Director • Lawyer | 30 Jul 2020←2 Years 1 Month→29 Aug 2022 | Dissolved | |
| Spectrum Information Technology Limited Director • Lawyer | 30 Jul 2020←2 Years 1 Month→29 Aug 2022 | Dissolved | |
| Spectrum Geophysical Services Limited Director • Lawyer | 30 Jul 2020←2 Years 1 Month→29 Aug 2022 | Dissolved | |
| Spectrum Geo Limited Director • Lawyer | 26 Feb 2020←2 Years 6 Months→29 Aug 2022 | Active | |
| TGS Geophysical Investments Limited Director • Lawyer | 14 Feb 2020←2 Years 6 Months→29 Aug 2022 | Active | |
| TGS Geophysical Company (UK) Limited Director • Lawyer | 14 Feb 2020←2 Years 6 Months→29 Aug 2022 | Active | |
| TGS-Nopec Geophysical Company (UK) Limited Director • Lawyer | 10 Oct 2016←5 Years→3 May 2022 | Dissolved | |
