Exhibit 23.3
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of Mereo BioPharma Group plc of our report dated March 27, 2024 relating to the financial statements, which appears in Mereo BioPharma Group plc’s Annual Report on Form 10-K for the year ended December 31, 2023. We also consent to the reference to us under the heading “Experts” in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
Reading, United Kingdom
May 15, 2024
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