Exhibit 8.1
Subsidiaries of Mereo BioPharma Group plc
| Legal Name of Subsidiary |
Jurisdiction of Organization | |
| Mereo BioPharma 1 Limited | United Kingdom | |
| Mereo BioPharma 2 Limited | United Kingdom | |
| Mereo BioPharma 3 Limited | United Kingdom | |
| Mereo BioPharma 4 Limited | United Kingdom | |
| Mereo BioPharma Ireland Limited | Ireland | |
| Mereo US Holdings Inc. | Delaware | |
| Mereo BioPharma 5, Inc. | Delaware | |
| NAVI Subsidiary, Inc. | Delaware |