EXHIBIT 23.1 
  
  
 Letter of Consent of Independent Auditors 
  
  
 PricewaterhouseCoopers, as the successor firm of Coopers & Lybrand, consent
 to the inclusion in this Form 8-K, as amended, of  Marsh & McLennan
 Companies, Inc. (Commission File No. 1-5998 ) of our report dated February
 17, 1998, except for notes 24(c) and 35 dated May 7, 1998, on our December
 31, 1997 audit of the consolidated financial statements and financial
 statement schedule of Sedgwick Group plc . 
  
 We also consent to the incorporation by reference in the previously filed
 Registration Statements of Marsh & McLennan Companies, Inc. on Form S-8
 (Registration File Nos. 2-58660, 2-65096, 33-32880, 33-48803, 33-48807, 33-
 54349, 33-59603, 33-63389, 333-35741, 333-35739, 333-51141, and 333-29627)
 and, the previously filed Registration Statements on Form S-3 (Registration
 Nos. 333-25069, 333-28201, 333-41021, 333-48707 and 333-67543) of our
 report dated February 17, 1998, except for notes 24(c) and 35 dated May 7,
 1998, on our December 31, 1997 audit of the consolidated financial
 statements and financial statement schedule of Sedgwick Group plc. 
  
  
 PricewaterhouseCoopers 
 Chartered Accountants 
 London, England 
 December 23, 1998