EXHIBIT 31.3
Certification
I, Justin Gover, certify that:
| 1. | I have reviewed this Amendment No. 1 to the annual report on Form 10-K/A of GW Pharmaceuticals plc; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| Date: April 30, 2021 | /s/ Justin Gover | |||
| Justin Gover | ||||
| Chief Executive Officer and Director | ||||
| (Principal Executive Officer) |