| Ablett Properties Ltd | Shareholding | 15 Nov 2013 | Active | property investment |
| Berkshire Hathaway Inc. | Shareholding | 23 Jul 2025 | Active | conglomerate holdings |
| Chikara Funds plc | Shareholding | 23 Jul 2025 | Active | part of the member's small self-administered scheme |
| City and Suburban Investments Limited | Shareholding | 15 Nov 2013 | Active | property investment |
| City and Suburban Investments Limited | Directorship | 4 Nov 2013 | Active | – |
| Craig & Company | Directorship | 4 Nov 2013 | Active | – |
| Dennis Reed Limited | Shareholding | 15 Nov 2013 | Active | estate and management agents |
| Dependable Homes Limited | Shareholding | 15 Nov 2013 | Active | property development and investment |
| Dependable Investments Limited | Shareholding | 15 Nov 2013 | Active | property development |
| Dependable Properties Limited | Shareholding | 15 Nov 2013 | Active | property investment |
| Dependable Properties Limited | Directorship | 4 Nov 2013 | Active | – |
| Director and Company Secretary, Dennis Reed Limited | Directorship | 4 Nov 2013 | Active | estate and management agents |
| Director and Company Secretary, Dependable Homes Limited | Directorship | 4 Nov 2013 | Active | – |
| Director and Company Secretary, Dependable Investments Limited | Directorship | 4 Nov 2013 | Active | – |
| Holme-Sumner Investment Company Limited | Shareholding | 15 Nov 2013 | Active | property investment |
| Roche Holdings AG | Shareholding | 10 Apr 2017 | Active | healthcare company |
| Smithson Investment Trust plc | Shareholding | 23 Jul 2025 | Active | part of the member's small self-administered scheme |
| St James’ Square Investment Company Limited | Shareholding | 15 Nov 2013 | Active | property investment |
| Station Court | Directorship | 4 Nov 2013 | Active | – |
| The Creator Fund | Shareholding | 12 May 2022 | Active | venture capital fund |
| The Edinburgh Investment Trust plc | Shareholding | 23 Jul 2025 | Active | part of the member's small self-administered scheme |
| The Mercantile Investment Trust plc | Shareholding | 23 Jul 2025 | Active | – |
| The Monks Investment Trust plc | Shareholding | 23 Jul 2025 | Active | – |
| Town & County Investment Company Limited | Shareholding | 15 Nov 2013 | Active | property investment |
| Town Freehold Investment Properties Limited | Shareholding | 8 Jan 2019 | Active | – |
| Veritas Funds plc | Shareholding | 23 Jul 2025 | Active | – |
| Wilcroft Holdings Ltd | Shareholding | 15 Nov 2013 | Active | property investment |
| Wilcroft Investment Company Limited | Shareholding | 15 Nov 2013 | Active | property investment |
