Exhibit 23.1 2014

We consent to the incorporation by reference in Registration Statements No. 333-184515 on Form S-3 and in Registration Statements No. 333-197706, 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 24, 2015 relating to the consolidated financial statements of Willis Group Holdings Public Limited Company and its subsidiaries, and the effectiveness of Willis Group Holdings Public Limited Company's and its 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, 2014.