WILLIS TOWERS WATSON PLC — Director's Dealing 2010

May 7, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WILLIS GROUP HOLDINGS PLC (WSH)
CIK: 0001140536
Period of Report: 2010-05-06

Reporting Person: Margrett David (Chairman & CEO, Willis Limited)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-06	Ordinary Shares, nominal value $0.000115 per share	S	96	$31.58	Disposed	53964	Direct
2010-05-06	Ordinary Shares, nominal value $0.000115 per share	S	7700	$32.8438	Disposed	46264	Direct

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 12, 2010.

F2: Includes an aggregate of 30,173 restricted stock units, subject to the satisfaction of vesting requirements. This amount also reflects an additional 2,086 RSUs that vested on March 2, 2010.

F3: The number of securities disposed of represents the aggregate number of shares sold in multiple open market transactions having prices ranging from $32.75 to $33.00 per share. The price listed in Table I represents the weighted average sale price for such sales. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or a stockholder of the Issuer, upon request, information regarding the number of shares sold at each separate price within the range.