| Company | Timeline | Status | |
| Holtzbrinck Science & Technology Limited Director • Company Director | 25 May 2020←1 Year 4 Months→11 Oct 2021 | Active | |
HMT No. 2 Limited Director • Company Director | 5 Aug 2015←10 Months→28 Jun 2016 | Dissolved | |
HMT No. 1 Limited Director • Company Director | 5 Aug 2015←10 Months→28 Jun 2016 | Dissolved | |
| Holtzbrinck Publishing Investments Limited Director • Company Director | 14 Apr 2015←6 Years→11 Oct 2021 | Active | |
| Holtzbrinck Investment Limited Director • Company Director | 14 Apr 2015←6 Years→11 Oct 2021 | Active | |
CRW Publishing Limited Director • Company Director | 27 Feb 2015←2 Years 2 Months→23 May 2017 | Dissolved | |
Macmillan Distribution Limited Director • Company Director | 28 Mar 2014←3 Years→28 Nov 2017 | Dissolved | |
| Euphyia Limited Director • Director | 17 May 2004←18 Years→17 Jan 2023 | Dissolved | |
Antsa Limited Director • Director | 4 Sep 2003←15 Years→11 Sep 2018 | Dissolved | |
Producer Services Holdings Limited Director • Accountant | 25 Mar 2003←2 Months→19 Jun 2003 | Dissolved | |
