| | Class | % of class
held by
Rolls-Royce
plc | | % of total
equity
held by
Rolls-Royce
plc |
 |
| Civil aerospace | | | | |
| RoSec Limited 1
Digital engine controls | A Ordinary B Ordinary | — 100 | 
| 50 |
| TRT Limited
Turbine blade repair services | A Ordinary B Ordinary | — 100 |
| 49.5 |
| Turbine Surface Technologies Limited
Turbine surface coatings | A Ordinary B Ordinary | — 100 |
| 50 |
|
| Defence | | | | |
| Rolls-Royce Turbomeca Limited (UK & France)
Adour and RTM322 engines collaboration | A Shares B Shares | — 100 |
| 50 |
| Turbo-Union Limited (UK, Germany & Italy)
RB199 engine collaboration | Ordinary A Shares | 40 37.5 |
| 40 |
|
| Energy | | | | |
| Rolls Wood Group (Repair and Overhauls) Limited
Repair and overhaul | A Ordinary B Ordinary | 100 — |
| 50 |
|
| Financial services and corporate | | | | |
| Alpha Partners Leasing Limited
Engine leasing | A Ordinary B Ordinary | 100 — |
| 50 |
|
