Exhibit 23.1 2013

We consent to the incorporation by reference in Registration Statements No. 333-153769 and 333-184515 on Form S-3 and in Registration Statements No. 333-62780, No. 333-63186, No. 333-130605, No. 333-153202, No. 333-153770, No. 333-169961 and No. 333-181150 on Form S-8 of our reports dated February 27, 2014 relating to the consolidated financial statements of Willis Group Holdings Public Limited Company and subsidiaries (which expressed an unqualified opinion on those financial statements and included an explanatory paragraph regarding the restatement of condensed consolidating financial information as discussed in Notes 30 to 32) and the effectiveness of Willis Group Holdings Public Limited Company and subsidiaries' internal control over financial reporting, appearing in this Annual Report on Form 10-K of Willis Group Holdings Public Limited Company and subsidiaries for the year ended December 31, 2013.