Exhibit 31.1
CERTIFICATION PURSUANT TO RULE 13a-14(a)
I, Dominic Casserley, certify that:
1. | I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K for the year ended December 31, 2013 of Willis Group Holdings Public Limited Company; 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, 2014
By: | /s/ Dominic Casserley | |
Dominic Casserley | ||
Chief Executive Officer | ||
(Principal Executive Officer) |