April 30, 2026 - CERTIFICATION - 10-K/A: Annual report [Section 13 and 15(d), not S-K Item 405]

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 Annual Report on Form 10-K 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: April 30, 2026

By:

/s/ Cameron Reynolds

Cameron Reynolds

President and Chief Executive Officer

Form: 10-K/A

Documents

1.	I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K 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: April 30, 2026	By:	/s/ Cameron Reynolds
		Cameron Reynolds
		President and Chief Executive Officer