EXHIBIT 31.3

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Cameron Reynolds, certify that:

1.	I have reviewed this Amendment No. 1 to the Quarterly Report on Form 10-Q/A of VolitionRx Limited;
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: August 15, 2025	/s/ Cameron Reynolds
	Cameron Reynolds
	President and Chief Executive Officer
	(Principal Executive Officer)