Exhibit 15.1

Consent of Independent Registered Public Accounting Firm
The Board of Directors
Endava plc:
We consent to the incorporation by reference in the registration statements (No. 333-228717) on Form S-8 and (No. 333-229213) on Form F-3 of our reports dated September 28, 2021, with respect to the consolidated financial statements of Endava plc and the effectiveness of internal control over financial reporting.

London, United Kingdom
September 28, 2021